| 200 | Successful | The operation completed successfully. |
| 429 | tooManyRequests | Rate limit exceeded. Each API key may make up to 100 requests per minute; wait and retry. |
| 500 | internalServerError | Unexpected server error. Retry later; contact support if it persists. |
| 511 | general | General error for uncategorised or fallback failures. |
| 512 | inputError | The request body or query is invalid, malformed or missing a required field. The message says which. |
| 515 | userError | A user-related error, for example the user was not found. |
| 520 | loginError | Login failed because of incorrect credentials or an account problem. |
| 525 | searchError | The requested record was not found or a lookup failed. |
| 526 | insertError | The record could not be created. |
| 527 | saveError | The record could not be saved or updated. |
| 528 | deleteError | The record could not be deleted. |
| 531 | adminError | An admin-level operation failed. |
| 532 | emailError | An email could not be sent or processed. |
| 533 | requestError | The request could not be completed. |
| 534 | priviledgeError | Not authorised: the API key's community or role cannot perform this operation on this record. |
| 538 | shareError | Sharing a resource or sending an invitation failed. |
| 539 | userLimitError | A user or resource limit for the community has been reached. |
| 540 | outOfTokens | The community has no tokens left. Paid actions (for example AI generation, email sends, webhook deliveries) are refused until tokens are added. |
| 550 | hackError | The request was rejected as suspicious. |
| 551 | accountTokenError | Invalid or expired account token. |
| 552 | sessionTokenError | A session token was required and is missing, expired or invalid. API key requests do not use session tokens; see 555. |
| 553 | communityTokenError | The community token is missing or invalid. |
| 554 | transactionError | A payment or transactional step failed. |
| 555 | externalVendorKeyError | The x-api-key header is missing, invalid, inactive or expired. Create or regenerate the key on the community's API page. |
| 580 | googlePlacesError | A location lookup failed. |
| 585 | messageError | A message could not be sent or retrieved. |
| 595 | serverError | General server-side failure. |