Could not generate dynpro &1 &2: &3

What causes this issue?

This error can occur in the Data Broser when programs and screens for
table maintenance are generated.
It was possible to save the screens that display individual entries,
but an error occurred while generating them.

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?

This is usually caused by an error in the definition of the table in
the ABAP Dictionary, for example, the table may not be fully activated,
or there may be errors in the foreign key relationships for individual
fields.

Error message extract from SAP system. Copyright SAP SE.