HTTP 422 Unprocessable Content vs 507 Insufficient Storage
HTTP 422 (Unprocessable Content) is a 4xx Client Error response, while 507 (Insufficient Storage) is a 5xx Server Error response. 422 indicates that the server understands the content type and syntax, but was unable to process the contained instructions. Common in API validation errors. In contrast, 507 means that the server is unable to store the representation needed to complete the request (WebDAV).
Description
The server understands the content type and syntax, but was unable to process the contained instructions. Common in API validation errors.
When You See It
When form validation fails — correct syntax but invalid data (e.g., email format wrong, date in the past).
How to Fix
Check the response body for specific validation errors and correct the input data.
Description
The server is unable to store the representation needed to complete the request (WebDAV).
When You See It
When the server runs out of disk space during WebDAV operations.
How to Fix
Free up disk space on the server or increase storage capacity.
Key Differences
422 is a 4xx Client Error response, while 507 is a 5xx Server Error response.
HTTP 422: The server understands the content type and syntax, but was unable to process the contained instructions. Common in API validation errors.
HTTP 507: The server is unable to store the representation needed to complete the request (WebDAV).
You encounter 422 when when form validation fails — correct syntax but invalid data (e.g., email format wrong, date in the past).
You encounter 507 when when the server runs out of disk space during WebDAV operations.
When to Use Which
For 422 (Unprocessable Content): Check the response body for specific validation errors and correct the input data. For 507 (Insufficient Storage): Free up disk space on the server or increase storage capacity.