Paste a packed DSS error code (e.g. -200384800) to decode it into plain English. Runs entirely in your browser — nothing is sent anywhere.
The code packs five base-10 fields: severity | highFunction | lowFunction | dssError | systemError. Messages may contain placeholders (%d, %s) whose runtime values are not stored in the code, so they cannot be filled in here. System errors are shown as the raw OS error number.