Business transaction &1 needs to be maintained in Customizing

What causes this issue?

All newly defined business transactions of the <ZK>Change</> business
process must be defined in Developer Customizing under <ZK>Internal
Customizing</> as well as in the Customizing activity
<DS:SIMG./PM0/ABU_PBTXCTR>Define Business Transactions</>.

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?

Create the newly added business transaction in Customizing.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.