1020: Mutually exclusive.
Two fields were supplied where exactly one is allowed, or neither was.
HTTP status: 422. May also be reported as a field-level finding in error.details[].
The part or request declares a choice between fields and the request either set both or set none. Supply exactly one.
Troubleshooting
Section titled “Troubleshooting”- Inspect details[].param and GET /v1/parts/{type} for which fields form the choice.