Enter only one sender

What causes this issue?

You want to plan both the cost center &V1& and the business process
&V2& in one row using the K_ACT_PLAN_INTERFACE_PERIOD or
K_ACT_PLAN_INTERFACE_TOTAL module. This is not allowed.

System Response

The record is not updated.

How to fix this error?

Transfer only the cost center or only the business process.
If you want to plan both, transfer two different rows in the table
IRKU02JA or IRKU02G.

Error message extract from SAP system. Copyright SAP SE.