Invalid IP error

I have one particular request getting this error:
{“errors”:[{“message”:“Invalid IP”,“locations”:[{“line”:2,“column”:3}],“path”:[“CODESECTION”,“myEndpoint”],“type”:“Authentication”}],“data”:{“CODESECTION”:null}}

CODESECTION and myEndpoint are placeholders.

I dug through Github after checking the schema and copied/pasted in what I found in our code where myEndpoint is created, just to rule out a typo.

I then wondered what error I had in the test itself and tried pasting myEndpoint in place of myEndpointVariation in a test that takes the same argument (user’s email) and managed to get the same error again.

My search of our Github returned very few results for myEndpoint, but it does appear to be utilized by the code in a couple of places (as opposed to it being in development or developed but not used in favor of something else).

What else should one look at in troubleshooting this?