No maintenance activity type could be determined

What causes this issue?

The system could not determine a default
<GL:maintenance_activity_type>maintenance activity type</> for the
<GL:order_type>order type</>.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Maintain the maintenance activity type in the screen.
In future, to have a maintenance activity type proposed as a default
for an order type, you must maintain the <LS>authorized maintenance
activity types per order type</> using the Customizing function.
IF &DEVICE& = 'SCREEN'
<DS:TRAN.OIO5>Proceed</>
ENDIF
INCLUDE 'DARF-NICHT' OBJECT DOKU ID TX LANGUAGE E

Error message extract from SAP system. Copyright SAP SE.