E04060 — ContactMatchKeyMissing
This entry does not carry the identifier the batch's match_on requires.
- HTTP status: 422
- Type: validation_error
- Name: ContactMatchKeyMissing
What to do
Every entry in a batch that sets match_on must carry that field. Add it to this entry, or drop match_on to let each entry match on whatever identifiers it carries.
Related
- E04xxx — Email sending & delivery: every code in this range
- Errors: the full wire contract, status mapping, and error catalog
- Error handling: branching on type and code, validation details, and vendor_code