3516137 - Cost Center Cannot be Substituted - SAP S/4HANA Cloud Public Edition

The BADI FIN_CODING_BLOCK_SUBSTITUTION includes the field "cost center" in the change parameters, however, the Cost Center can't be overwritten.

 SAP S/4HANA Cloud Public Edition

The cost center cannot be overwritten in the coding block substitution. The system's posting logic is designed to prevent this, ensuring that the cost center is only substituted as a fallback if it is not already derived by the process.

It's mentioned in SAP Help Portal: Rules for Substitution/Validation -> Coding Block Business Context 

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