| 400 | DID Syntax Invalid: DID must start with [did:] | Check your input and the provided examples to ensure it's a DID. |
| 404 | DID or DID URL not found | For did:web specifically, this usually suggests that the /.well-known/did.json file is not available. |
| 406 | Representation not supported | DID documents can be created in different formats. This error suggests a mismatch between the type of representation requested and what is available. |
| 410 | DID deactivated | The DID was successfully resolved, but it is no longer active. |
| 501 | DID method not supported | DTT is not currently configured to have access to a driver for this DID method, or a driver has not been implemented yet. |