SchemaPath Null in response

[Alessandro100]

Running the validate endpoint and validating certain feeds will have the error property schemaPath be null. This does not happen for every feed. These have some of the identified feeds where this happens

[2.3] https://gbfs.api.ridedott.com/public/v2/dubai/gbfs.json
[2.3] https://gbfs.api.ridedott.com/public/v2/dornbirn/gbfs.json
[3.0] https://backend.citiz.fr/public/provider/7/gbfs/v3.0/gbfs.json
[3.0] https://api.entur.io/mobility/v2/gbfs/v3/boltlillestrom/gbfs (only in system_information)

Ideal state would be that schemaPath would never be null if the error exists

[testower]

Root Cause

The null schemaPath values are caused by design decisions in the everit json-schema library (version 1.14.6), specifically:

1. CombinedSchema explicitly passes null: The CombinedSchema class, which handles oneOf, anyOf, and allOf validation, explicitly creates ValidationException with null for schemaLocation:

throw new ValidationException(null,
format("no subschema matched out of the total %d subschemas", subschemaCount),
"anyOf");

2. Schema builders may not set location: Even though SchemaLoader normally sets schemaLocation during schema construction, some validation scenarios don’t have this information available when exceptions are created.

[testower]

These are our options as I see it:

1. Make the field optional in the openapi spec; or
2. Fill in something else in there if it's not filled in already. Claude suggested the root schema.

I'm leaning towards 1.

[Alessandro100]

I'm good with option 1 cc @davidgamez

[davidgamez]

These are our options as I see it:

1. Make the field optional in the openapi spec; or
2. Fill in something else in there if it's not filled in already. Claude suggested the root schema.

I'm leaning towards 1.

I agree with @testower and @Alessandro100 , option 1 looks like a better choice for MVP. I think we should leave this issue open in case we want to revisit it later. Having the null in the schema path doesn't help the producer to fix the issue. cc: @emmambd