SAP ArchiveLink (document format is unknown/not readable)

What causes this issue?

An error was reported by the partner system.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

The reason for the error cannot be eliminated from the application.
Please inform your system administrator / content server administrator.

Error message extract from SAP system. Copyright SAP SE.