GTFS Schedule Validation Report

This report was generated by the Canonical GTFS Schedule validator, version 7.1.0 at 2026-05-04T09:28:53Z,
for the dataset file:///shared/valley-metro_1894f4af.zip. No country code was provided.

Use this report alongside our documentation.

Summary

Agencies included

Feed Info

Publisher Name:
GMV Syncromatics
Feed Email:
support@gmvsync.com
Feed Language:
English
Feed Start Date:
2026-04-05
Feed End Date:
N/A

Files included

  1. agency.txt
  2. calendar.txt
  3. calendar_attributes.txt
  4. directions.txt
  5. feed_info.txt
  6. realtime_routes.txt
  7. routes.txt
  8. shapes.txt
  9. stop_times.txt
  10. stops.txt
  11. trips.txt

Counts

  • Agencies: 1
  • Blocks: 45
  • Routes: 0
  • Shapes: 38
  • Stops: 815
  • Trips: 588

Specification Compliance report

484 notices reported (37 errors, 444 warnings, 3 infos)

Notice Code Severity Total
block_trips_with_overlapping_stop_times ERROR 3

block_trips_with_overlapping_stop_times

Trips with the same block id have overlapping stop times.

You can see more about this notice here.

csvRowNumberA (?) The row number from `trips.txt` of the first faulty trip. tripIdA (?) The id of first faulty trip. serviceIdA (?) The service id of the first faulty trip. csvRowNumberB (?) The row number from `trips.txt` of the second faulty trip. tripIdB (?) The id of the other faulty trip. serviceIdB (?) The service id of the other faulty trip. blockId (?) The `trips.block_id` of the overlapping trip. intersection (?) The overlapping period.
364 "B351T4" "2" 365 "B351T4" "2" "506355" "20260406"
364 "B351T4" "2" 366 "B351T5" "2" "506355" "20260406"
365 "B351T4" "2" 366 "B351T5" "2" "506355" "20260406"
decreasing_or_equal_stop_time_distance ERROR 21

decreasing_or_equal_stop_time_distance

Decreasing or equal shape_dist_traveled in stop_times.txt.

When sorted by stop_times.stop_sequence, two consecutive entries in stop_times.txt should have increasing distance, based on the field shape_dist_traveled. If the values are equal, this is considered as an error.

You can see more about this notice here.

tripId (?) The id of the faulty trip. stopId (?) The id of the faulty stop. csvRowNumber (?) The row number from `stop_times.txt`. shapeDistTraveled (?) Actual distance traveled along the shape from the first shape point to the faulty record. stopSequence (?) The faulty record's `stop_times.stop_sequence`. prevCsvRowNumber (?) The row number from `stop_times.txt` of the previous stop time. prevShapeDistTraveled (?) Actual distance traveled along the shape from the first shape point to the previous stop time. prevStopSequence (?) The previous record's `stop_times.stop_sequence`.
"B1T28" "5696507" 7544 9877.45565308792 34 7543 11375.873419318303 33
"B1T20" "5696507" 7324 9877.45565308792 34 7323 11375.873419318303 33
"B1T24" "5696507" 7434 9877.45565308792 34 7433 11375.873419318303 33
"B1T16" "5696507" 7192 9877.45565308792 34 7191 11375.873419318303 33
"B1T12" "5696507" 7082 9877.45565308792 34 7081 11375.873419318303 33
"B4T6" "5696507" 10223 9877.45565308792 33 10222 11375.873419318303 32
"B4T2" "5696507" 9813 9877.45565308792 33 9812 11375.873419318303 32
"B351T4" "9718538" 8614 0.0 0 8608 0.0 0
"B351T4" "10535476" 8615 1997.7915001727572 1 8609 1997.7915001727572 1
"B351T4" "4351332" 8616 5724.128057045293 2 8610 5724.128057045293 2
"B351T4" "4351333" 8617 6270.774390914116 3 8611 6270.774390914116 3
"B351T4" "4239462" 8618 16627.569061244754 4 8612 16627.569061244754 4
"B351T4" "4235980" 8619 74400.64600452699 5 8613 74400.64600452699 5
"B1T8" "5696507" 7764 9877.45565308792 34 7763 11375.873419318303 33
"B1T4" "5696507" 7654 9877.45565308792 34 7653 11375.873419318303 33
"B4T30" "5696507" 10140 9877.45565308792 33 10139 11375.873419318303 32
"B4T22" "5696507" 9896 9877.45565308792 33 9895 11375.873419318303 32
"B4T26" "5696507" 10005 9877.45565308792 33 10004 11375.873419318303 32
"B4T18" "5696507" 9747 9877.45565308792 33 9746 11375.873419318303 32
"B4T10" "5696507" 9529 9877.45565308792 33 9528 11375.873419318303 32
"B4T14" "5696507" 9638 9877.45565308792 33 9637 11375.873419318303 32
duplicate_key ERROR 7

duplicate_key

Duplicated entity.

The values of the given key and rows are duplicates.

You can see more about this notice here.

filename (?) The name of the faulty file oldCsvRowNumber (?) The row of the first occurrence. newCsvRowNumber (?) The row of the other occurrence. fieldName1 (?) Composite key's first field name. fieldValue1 (?) Composite key's first value.
"trips.txt" 364 365 "trip_id" "B351T4"
"stop_times.txt" 8608 8614 "trip_id,stop_sequence" "B351T4,0"
"stop_times.txt" 8609 8615 "trip_id,stop_sequence" "B351T4,1"
"stop_times.txt" 8610 8616 "trip_id,stop_sequence" "B351T4,2"
"stop_times.txt" 8611 8617 "trip_id,stop_sequence" "B351T4,3"
"stop_times.txt" 8612 8618 "trip_id,stop_sequence" "B351T4,4"
"stop_times.txt" 8613 8619 "trip_id,stop_sequence" "B351T4,5"
invalid_url ERROR 1

invalid_url

A field contains a malformed URL.

Definitions for valid URLs are quite vague. We perform strict validation using the Apache Commons UrlValidator.

You can see more about this notice here.

filename (?) The name of the faulty file. csvRowNumber (?) The row of the faulty record. fieldName (?) Faulty record's field name. fieldValue (?) Faulty value.
"routes.txt" 26 "route_url" "http://valleymetro.com/docs/schedules/9192 Salem City final 12-12-12.pdf"
stop_time_with_arrival_before_previous_departure_time ERROR 5

stop_time_with_arrival_before_previous_departure_time

Backwards time travel between stops in stop_times.txt

For a given trip_id, the arrival_time of (n+1)-th stoptime in sequence must not precede the departure_time of n-th stoptime in sequence in stop_times.txt.

You can see more about this notice here.

csvRowNumber (?) The row number of the faulty record. prevCsvRowNumber (?) The row of the previous stop time. tripId (?) The trip_id associated to the faulty record. arrivalTime (?) Arrival time at the faulty record. departureTime (?) Departure time at the previous stop time.
8609 8614 "B351T4" "11:25:00" "14:00:00"
8610 8615 "B351T4" "11:30:00" "14:06:00"
8611 8616 "B351T4" "11:31:00" "14:10:00"
8612 8617 "B351T4" "11:45:00" "14:11:00"
8613 8618 "B351T4" "12:20:00" "14:25:00"
equal_shape_distance_same_coordinates WARNING 259

equal_shape_distance_same_coordinates

Two consecutive points have equal shape_dist_traveled and the same lat/lon coordinates in shapes.txt.

When sorted by shape.shape_pt_sequence, the values for shape_dist_traveled must increase along a shape. Two consecutive points with equal values for shape_dist_traveled and the same coordinates indicate a duplicative shape point.

You can see more about this notice here.

Only the first 50 of 259 affected records are displayed below.

shapeId (?) The id of the faulty shape. csvRowNumber (?) The row number from `shapes.txt`. shapeDistTraveled (?) Actual distance traveled along the shape from the first shape point to the faulty record. shapePtSequence (?) The faulty record's `shapes.shape_pt_sequence`. prevCsvRowNumber (?) The row number from `shapes.txt` of the previous shape point. prevShapeDistTraveled (?) Actual distance traveled along the shape from the first shape point to the previous shape point. prevShapePtSequence (?) The previous record's `shapes.shape_pt_sequence`.
"21720" 3548 304.1054590638244 6 3547 304.1054590638244 5
"21720" 3554 596.448215952653 12 3553 596.448215952653 11
"21720" 3561 849.5189211445023 19 3560 849.5189211445023 18
"21720" 3575 1409.5882022021544 33 3574 1409.5882022021544 32
"21720" 3592 2178.217049824527 50 3591 2178.217049824527 49
"21720" 3597 2348.119454984594 55 3596 2348.119454984594 54
"21720" 3602 2567.038886404733 60 3601 2567.038886404733 59
"21720" 3623 3757.2988675710158 81 3622 3757.2988675710158 80
"21720" 3634 4351.560746141234 92 3633 4351.560746141234 91
"21720" 3639 4539.872879169244 97 3638 4539.872879169244 96
"21720" 3642 4684.066205825251 100 3641 4684.066205825251 99
"21720" 3649 4965.685048887196 107 3648 4965.685048887196 106
"21720" 3654 5240.685049613049 112 3653 5240.685049613049 111
"21720" 3659 5521.403421281125 117 3658 5521.403421281125 116
"21720" 3665 5799.010064533462 123 3664 5799.010064533462 122
"21720" 3674 6152.1165895707145 132 3673 6152.1165895707145 131
"21720" 3679 6357.517643064134 137 3678 6357.517643064134 136
"21720" 3686 6735.771278918379 144 3685 6735.771278918379 143
"21720" 3694 7130.814853453098 152 3693 7130.814853453098 151
"21720" 3703 7459.117396556774 161 3702 7459.117396556774 160
"21720" 3709 7751.07612169741 167 3708 7751.07612169741 166
"21720" 3721 8272.287675816897 179 3720 8272.287675816897 178
"27544" 8982 389.6707539879683 26 8981 389.6707539879683 25
"27544" 8988 587.4388689022377 32 8987 587.4388689022377 31
"27544" 9008 1433.1014903337614 52 9007 1433.1014903337614 51
"27544" 9019 1943.2795951248554 63 9018 1943.2795951248554 62
"27544" 9029 2546.4260990986845 73 9028 2546.4260990986845 72
"27544" 9036 2922.0247889060797 80 9035 2922.0247889060797 79
"27544" 9046 3278.161637590469 90 9045 3278.161637590469 89
"27544" 9053 3549.01192760465 97 9052 3549.01192760465 96
"27544" 9063 4074.6361398046447 107 9062 4074.6361398046447 106
"27544" 9069 4269.490550109113 113 9068 4269.490550109113 112
"27544" 9076 4605.563169531571 120 9075 4605.563169531571 119
"27544" 9084 5016.388250469711 128 9083 5016.388250469711 127
"27544" 9110 6338.506169375717 154 9109 6338.506169375717 153
"27544" 9114 6473.375642599173 158 9113 6473.375642599173 157
"27544" 9119 6727.648242751587 163 9118 6727.648242751587 162
"27544" 9130 7429.591562264734 174 9129 7429.591562264734 173
"30420" 13218 1845.9135179484258 37 13217 1845.9135179484258 36
"30420" 13227 2173.814116168614 46 13226 2173.814116168614 45
"30420" 13241 2833.846124158434 60 13240 2833.846124158434 59
"30420" 13310 7557.516737944444 129 13309 7557.516737944444 128
"30420" 13327 8498.145749108788 146 13326 8498.145749108788 145
"30420" 13332 8797.09972840168 151 13331 8797.09972840168 150
"30420" 13337 9065.13344372001 156 13336 9065.13344372001 155
"30420" 13347 9618.474732894794 166 13346 9618.474732894794 165
"30420" 13353 9878.61206944056 172 13352 9878.61206944056 171
"30420" 13367 10535.427596066318 186 13366 10535.427596066318 185
"30420" 13377 10966.200613945613 196 13376 10966.200613945613 195
"30420" 13395 12249.063403753944 214 13394 12249.063403753944 213
leading_or_trailing_whitespaces WARNING 19

leading_or_trailing_whitespaces

The value in CSV file has leading or trailing whitespaces.

This notice is emitted for values protected with double quotes since whitespaces for non-protected values are trimmed automatically by CSV parser.

The validator strips whitespaces from protected values. We do not see any use case when such a whitespace may be needed. On the other hand, some real-world feeds use trailing whitespaces for some values and omit them for the others. This is causing the largest problem when a primary key and a foreign key differ just by a whitespace: it is clear that they are intended to be the same, that is why we always strip whitespaces.

You can see more about this notice here.

filename (?) The name of the faulty file. csvRowNumber (?) The row of the faulty record. fieldName (?) Faulty record's field name. fieldValue (?) Faulty value.
"stops.txt" 12 "stop_name" "Jefferson & Kirk "
"stops.txt" 17 "stop_name" "Carillion Roanoke Memorial Hospital "
"stops.txt" 18 "stop_name" "Radford University Carilion "
"stops.txt" 26 "stop_name" "Blackburg Municipal Building "
"stops.txt" 172 "stop_name" "Colonial NB at 220S On-Ramp "
"stops.txt" 192 "stop_name" "Cove at Hershberger "
"stops.txt" 198 "stop_name" "Cove at Hershberger "
"stops.txt" 547 "stop_name" "Orange EB at King "
"stops.txt" 684 "stop_name" "Valley View Mall "
"stops.txt" 696 "stop_name" "Vineyard SB at Rosies "
"stops.txt" 777 "stop_name" "Harper Hall "
"stops.txt" 782 "stop_name" "3rd St at Church Ave "
"stops.txt" 784 "stop_name" "3rd St at Church Ave "
"stops.txt" 787 "stop_name" "3rd St Station Star Line "
"stops.txt" 789 "stop_name" "Franklin Road at Avenham "
"routes.txt" 2 "route_long_name" "Star Line Trolley "
"routes.txt" 7 "route_short_name" "86 "
"routes.txt" 25 "route_short_name" "85 "
"routes.txt" 27 "route_desc" "From Veteran's Hospital to Salem Goodwill via Roanoke Blvd and East Main St. with stops at the Salem Civic Center, Andrew Lewis "
missing_feed_info_date WARNING 1

missing_feed_info_date

One of feed_start_date or feed_end_date is specified, but not both.

Even though feed_info.start_date and feed_info.end_date are optional, if one field is provided the second one should also be provided.

You can see more about this notice here.

csvRowNumber (?) The row number of the faulty record. fieldName (?) Either `feed_end_date` or `feed_start_date`.
2 "feed_end_date"
missing_recommended_field WARNING 1

missing_recommended_field

A recommended field is missing.

The given field has no value in some input row, even though values are recommended.

You can see more about this notice here.

filename (?) The name of the faulty file. csvRowNumber (?) The row of the faulty record. fieldName (?) The name of the missing field.
"feed_info.txt" 2 "feed_end_date"
route_color_contrast WARNING 4

route_color_contrast

Insufficient route color contrast.

A route's color and route_text_color should be contrasting.

You can see more about this notice here.

routeId (?) The id of the faulty record. csvRowNumber (?) The row number of the faulty record. routeColor (?) The faulty record's HTML route color. routeTextColor (?) The faulty record's HTML route text color.
"4804" 17 "#ABD8DA" "#FFFFFF"
"4805" 18 "#ABD8DA" "#FFFFFF"
"4806" 19 "#ABD8DA" "#FFFFFF"
"4807" 20 "#ABD8DA" "#FFFFFF"
route_long_name_contains_short_name WARNING 30

route_long_name_contains_short_name

Long name should not contain short name for a single route.

In routes.txt, route_long_name should not contain the value for route_short_name, because when both are provided, they are often combined by transit applications. Note that only one of the two fields is required. If there is no short name used for a route, use route_long_name only.

Good examples:

route_short_name/route_long_name Dataset
"N"/"Judah" Muni San Fransisco
"6"/"ML King Jr Blvd" Trimet Portland Streetcar
"55"/"Boulevard Saint Laurent" STM Montreal
"1"/"Rangiora/Cashmere" Metro Christchurch

Bad examples:

route_short_name/route_long_name
"604"/"604"
"14"/"Route 14"
"2"/"Route 2: Bellows Falls In-Town"

You can see more about this notice here.

routeId (?) The id of the faulty record. csvRowNumber (?) The row number of the faulty record. routeShortName (?) The faulty record's `route_short_name`. routeLongName (?) The faulty record's `route_long_name`.
"4037" 4 "Smart Way Express" "Smart Way Express"
"4724" 5 "12" "12-Hoback to 3rd St Station"
"4780" 6 "32" "32- Blue Hills to 3rd St Station"
"4781" 7 "86" "86 - Peters Creek Road to 3rd St Station"
"4782" 8 "11" "11- 3rd St Station to Valley View Mall"
"4783" 9 "15" "15- 3rd St Station to Hoback"
"4787" 10 "16" "16- Valley View Mall to 3rd St Station"
"4789" 11 "21" "21- 3rd St Station to Valley Court"
"4790" 12 "22" "22- Valley Court to 3rd St Station"
"4791" 13 "25" "25- 3rd St Station to Airport"
"4792" 14 "26" "26- Airport to 3rd St Station"
"4793" 15 "31" "31- 3rd St Station to Blue Hills"
"4803" 16 "51" "51 - 3rd St Station to Tanglewood Mall"
"4804" 17 "61" "61 - 3rd St Station to Brambleton and Red Rock"
"4805" 18 "62" "62 - Red Rock to 3rd Street Station"
"4806" 19 "65" "65 - 3rd St Station to Grandin Road (PH High School)"
"4807" 20 "66" "66 -Grandin Road (PH High School) to 3rd St Station"
"4808" 21 "71" "71 - 3rd St Station to Lewis Gale Hospital"
"4809" 22 "72" "72 - Lewis Gale Hospital to 3rd St Station"
"4810" 23 "75" "75 - 3rd St Station to the Veteran's Hospital"
"4811" 24 "76" "76 - Veteran's Hospital to 3rd St Station"
"4816" 25 "85" "85 - 3rd St Station to Peters Creek Road"
"4818" 27 "92" "92 - Salem/VA Hospital to 3rd St Station"
"4832" 28 "35" "35 - 3rd St Station to Vinton"
"4833" 29 "36" "36 - Vinton to 3rd St Station"
"4834" 30 "41" "41 - 3rd St Station to Southeast Roanoke"
"4835" 31 "42" "42 - Southeast Roanoke to 3rd St Station"
"4836" 32 "52" "52 - Tanglewood Mall to 3rd St Station"
"4837" 33 "55" "55 - 3rd St Station to Tanglewood Mall"
"4838" 34 "56" "56 - Tanglwood Mall to 3rd Street Station"
route_short_name_too_long WARNING 1

route_short_name_too_long

Short name of a route is too long (more than 12 characters).

You can see more about this notice here.

routeId (?) The id of the faulty record. csvRowNumber (?) The row number of the faulty record. routeShortName (?) The faulty record's `route_short_name`.
"4037" 4 "Smart Way Express"
same_name_and_description_for_route WARNING 6

same_name_and_description_for_route

Same name and description for route.

The GTFS spec defines routes.txt route_desc as:

Description of a route that provides useful, quality information. Do not simply duplicate the name of the route.

See the GTFS and GTFS Best Practices links below for more examples of how to populate the route_short_name, route_long_name, and route_desc fields.

You can see more about this notice here.

csvRowNumber (?) The row number of the faulty record. routeId (?) The id of the faulty record. routeDesc (?) The `routes.routes_desc` of the faulty record. specifiedField (?) Either `route_short_name` or `route_long_name`.
2 "3894" "Trolley" "route_short_name"
3 "3913" "Smart Way Commuter" "route_long_name"
4 "4037" "Smart Way Express" "route_short_name"
30 "4834" "41 - 3rd St Station to Southeast Roanoke" "route_long_name"
31 "4835" "42 - Southeast Roanoke to 3rd St Station" "route_long_name"
32 "4836" "52 - Tanglewood Mall to 3rd St Station" "route_long_name"
stop_without_stop_time WARNING 3

stop_without_stop_time

A stop in stops.txt is not referenced by any stop_times.stop_id.

Such stops are not used by any trip and normally do not provide user value. This notice may indicate a typo in stop_times.txt.

You can see more about this notice here.

csvRowNumber (?) The row number of the faulty record. stopId (?) The id of the faulty stop. stopName (?) The name of the faulty stop.
139 "5695903" "Bullitt EB at 13th"
636 "5696450" "Salem Turnpike WB at Westwood"
815 "9568747" "Roanoke Blvd (Salem Health and Rehab)"
trip_distance_exceeds_shape_distance_below_threshold WARNING 120

trip_distance_exceeds_shape_distance_below_threshold

The distance between the last shape point and last stop point is greater than 0 but less than the 11.1m threshold.

You can see more about this notice here.

Only the first 50 of 120 affected records are displayed below.

tripId (?) The faulty record's trip id. shapeId (?) The faulty record's shape id. maxTripDistanceTraveled (?) The faulty record's trip max distance traveled. maxShapeDistanceTraveled (?) The faulty record's shape max distance traveled. geoDistanceToShape (?) The distance in meters between the shape and the stop.
"B10T10" "21717" 7958.056039796396 7958.031294975886 0.0
"B10T12" "21717" 7958.056039796396 7958.031294975886 0.0
"B10T14" "21717" 7958.056039796396 7958.031294975886 0.0
"B10T16" "21717" 7958.056039796396 7958.031294975886 0.0
"B10T18" "21717" 7958.056039796396 7958.031294975886 0.0
"B10T2" "21717" 7958.056039796396 7958.031294975886 0.0
"B10T20" "21717" 7958.056039796396 7958.031294975886 0.0
"B10T22" "21717" 7958.056039796396 7958.031294975886 0.0
"B10T24" "21717" 7958.056039796396 7958.031294975886 0.0
"B10T26" "21717" 7958.056039796396 7958.031294975886 0.0
"B10T28" "21717" 7958.056039796396 7958.031294975886 0.0
"B10T30" "21717" 7958.056039796396 7958.031294975886 0.0
"B10T4" "21717" 7958.056039796396 7958.031294975886 0.0
"B10T6" "21717" 7958.056039796396 7958.031294975886 0.0
"B10T8" "21717" 7958.056039796396 7958.031294975886 0.0
"B11T1" "21716" 9810.64138975939 9810.64138975922 0.0
"B11T11" "21716" 9810.64138975939 9810.64138975922 0.0
"B11T13" "21716" 9810.64138975939 9810.64138975922 0.0
"B11T15" "21716" 9810.64138975939 9810.64138975922 0.0
"B11T17" "21716" 9810.64138975939 9810.64138975922 0.0
"B11T19" "21716" 9810.64138975939 9810.64138975922 0.0
"B11T21" "21716" 9810.64138975939 9810.64138975922 0.0
"B11T23" "21716" 9810.64138975939 9810.64138975922 0.0
"B11T25" "21716" 9810.64138975939 9810.64138975922 0.0
"B11T27" "21716" 9810.64138975939 9810.64138975922 0.0
"B11T29" "21716" 9810.64138975939 9810.64138975922 0.0
"B11T3" "21716" 9810.64138975939 9810.64138975922 0.0
"B11T5" "21716" 9810.64138975939 9810.64138975922 0.0
"B11T7" "21716" 9810.64138975939 9810.64138975922 0.0
"B11T9" "21716" 9810.64138975939 9810.64138975922 0.0
"B1T12" "21618" 11375.873419318303 11375.845748062718 0.0
"B1T16" "21618" 11375.873419318303 11375.845748062718 0.0
"B1T20" "21618" 11375.873419318303 11375.845748062718 0.0
"B1T24" "21618" 11375.873419318303 11375.845748062718 0.0
"B1T28" "21618" 11375.873419318303 11375.845748062718 0.0
"B1T4" "21618" 11375.873419318303 11375.845748062718 0.0
"B1T8" "21618" 11375.873419318303 11375.845748062718 0.0
"B2T1" "21619" 8532.024077744103 8531.966733278186 0.0
"B2T13" "21619" 8532.024077744103 8531.966733278186 0.0
"B2T17" "21619" 8532.024077744103 8531.966733278186 0.0
"B2T21" "21619" 8532.024077744103 8531.966733278186 0.0
"B2T25" "21619" 8532.024077744103 8531.966733278186 0.0
"B2T29" "21619" 8532.024077744103 8531.966733278186 0.0
"B2T5" "21619" 8532.024077744103 8531.966733278186 0.0
"B2T9" "21619" 8532.024077744103 8531.966733278186 0.0
"B3T11" "21619" 8532.024077744103 8531.966733278186 0.0
"B3T15" "21619" 8532.024077744103 8531.966733278186 0.0
"B3T19" "21619" 8532.024077744103 8531.966733278186 0.0
"B3T23" "21619" 8532.024077744103 8531.966733278186 0.0
"B3T27" "21619" 8532.024077744103 8531.966733278186 0.0
unknown_file INFO 3

unknown_file

A file is unknown.

You can see more about this notice here.

filename (?) The name of the unknown file.
"calendar_attributes.txt"
"realtime_routes.txt"
"directions.txt"