Task list &1: (operation &4) activity type &2 not planned in given year

What causes this issue?

The system has created an order from task list &V1&. The activity type
&V2& is not planned for the given fiscal year &V3&. Calculating planned
costs from resulting work center of operation number &V4& will cause
errors.

How to fix this error?

Check the acitivity type planning for the resulting work center of
operation number &V4&.

Error message extract from SAP system. Copyright SAP SE.