Activate a rule to unassign orders for movement type &1

What causes this issue?

Movement type is not checked for auto un-assigning in customization.

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?

Go to SPRO->Cross application components->Advanced available to
Promise-> Supply assignment->Cross Applications->Activate movement type
for un-assigning orders automatically (For Goods Issue).
Go to SPRO->Cross application components->Advanced available to
Promise-> Supply assignment->Cross Applications->Activate Transfer
posting movement type for un-assigning orders.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.