No active BAdI implementation for object category &1 exists

What causes this issue?

An active implementation of BAdI, BADI_QNAO_OBJCAT with filter value
&V1& does not exist in the system. However, this implementation is
needed to assign an object with category &V1&.

System Response

The system terminates the action.

How to fix this error?

Contact your system administration.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.