Description for IDoc basic type & not found

What causes this issue?

The description of IDoc basic type '&v1&' is not available.

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?

Please check the consistency of IDoc basic type &v1& using the IDoc
definition tools.

Error message extract from SAP system. Copyright SAP SE.