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How to decipher LibreOffice error codes

Unfortunately the LibreOffice error codes is a combination of project area, error class and error code. The combination of these three provides some indication of what the cause is, although in most cases this is not conclusive.

The authoritative source for ErrCodes are the following files:

UnoException ErrCode

1287

Area: 0 (ERRCODE_AREA_TOOLS) Class: 5 (ERRCODE_CLASS_ACCESS) Code: 7 (ERRCODE_IO_ACCESSDENIED)

2074

Area: 0 (ERRCODE_AREA_TOOLS) Class: 8 (ERRCODE_CLASS_PARAMETER) Code: 26 (ERRCODE_IO_INVALIDPARAMETER)

3088

Area: 0 (ERRCODE_AREA_TOOLS) Class: 12 (ERRCODE_CLASS_WRITE) Code: 16 (ERRCODE_IO_CANTWRITE)