No activity type planning carried out for &/&

What causes this issue?

You want use the sender cost center / activity type &V1&/&V2&
combination. However, no activity type planning has been completed for
this combination in controlling area &V3&.

System Response

You cannot use the sender cost center / activity type &V1&/&V2&
combination

How to fix this error?

Complete activity type planning for the &V1&/&V2& combination first.

Error message extract from SAP system. Copyright SAP SE.