So I have 2 JSONs (simplified for easy understanding):

{
    "$schema":"https://json-schema.org/draft/2020-12/schema",
    "$id":"header.scm",
    "type":"object",
    "additionalProperties":false,
    "properties":{
        "id":{
            "type":"string",
            "pattern":"^[A-Z]*([0-9]{17})$"
        },
        "verb":{
            "type":"string",
            "enum":[
                "POST",
                "GET",
                "PUT",
                "PATCH",
                "DELETE"
            ]
        }
    },
    "required":[
        "id",
        "endpoint"
    ]
}

{
    "$schema":"https://json-schema.org/draft/2020-12/schema",
    "$id":"wms_mission.scm",
    "type":"object",
    "properties":{
        "header":{
            "$ref":"#C:/schemas/header.scm"
        },
        "body":{
            "additionalProperties":false,
            "type":"object",
            "properties":{
                "mission_id":{
                    "type":"string",
                    "pattern":"^(MISSION)([0-9]{17})$"
                },
                "command":{
                    "type":"string",
                    "enum":[
                        "CREATE",
            "CANCEL"
                    ]
                }
            },
            "required":[
                "mission_id",
                "command"
            ]
        }
    },
    "required":[
        "header",
        "body"
    ],
    "additionalProperties":false
}

This configuration of schemas checks that the messages that are sent have a header and a body and both of those have the correct configuration.

An example:

{
    "body":{
        "mission_id":"EJ_1",
        "command":"CREATE",
        
    },
    "header":{
        "id":"EXAMPLE_ID001",
        "verb":"POST"
    }
}

The thing is that the header is the same for all type of messages so I wanted to reference it.

As you can see, the second one checks the header configuration in the other file using an absolute path.

However, when I try to validate the schema I get this error message:

Check that the format follows the schema (wms_mission.scm). [header: is missing but it is required, body: is missing but it is required]

I don’t really understand what I’m doing wrong.
I tried playing with the relative path but I only got exceptions or it give it back as “correct”.

Any idea of how to reference another JSON schema file from a JSON schema?

Thanks in advance!