Task list entered not suitable for strategy: &

What causes this issue?

You are trying to create a <GL:maintenance_item>maintenance item</>
without entering a <GL:preventive_maintenance_strategy>maintenance
strategy</>. If you do not enter a strategy, you will be able to assign
the maintenance item to a <GL:multiple_counter_plan>multiple counter
plan</> but not to a time-based or performance-based
<GL:preventive_maintenance_plan>maintenance plan</>.

System Response

INCLUDE 'VERARBEITUNG-ENTER' OBJECT DOKU ID TX LANGUAGE EN

How to fix this error?

If you want to create a maintenance item for a multiple counter plan or
for a single plan, press <PF>Enter</>.
If you want to create a maintenance item for a time-based or
performance-based maintenance plan, you must first enter a strategy
before pressing <PF>Enter</>.

Error message extract from SAP system. Copyright SAP SE.