Error type · HTTP 400

A value was not accepted

A field was given a value the tool does not take. The answer lists the accepted values and, where one is close, the closest one. Correct the value and send the call again.

By Research desk, The Lender Report · Updated November 8, 2026

Code: invalid_parameter. Type: https://lender.report/errors/invalid-parameter/.

{
  "type": "https://lender.report/errors/invalid-parameter/",
  "title": "A value was not accepted",
  "status": 400,
  "code": "invalid_parameter",
  "detail": "One plain sentence that names the field and what is accepted."
}

All the types are on the errors page. The API and MCP docs are at /developers/.