You cannot allocate material components to sub-operations.
Message type: E = Error
Message class: CM - Task list messages: Material component allocations
Message number: 001
Message text: You cannot allocate material components to sub-operations.
What causes this issue?
Material components can only be allocated to operations.
How to fix this error?
Allocate the material component to the operation to which the
sub-operation belongs. Make a note on the allocation in the long text
for the operation.
Error message extract from SAP system. Copyright SAP SE.