
This error happens when you are in case:
- Site 1 has MOM
- Site 2: create Alternate method from MOM but you don’t assign Scheduling Resource for all operations, include Subassembly operations.
- When you get MOM on Site 2, Subassembly will display as a Material only, but the system still record operation for it (don’t display on screen).
SOLUTION:
- Add a new SubAssembly (any part).
- Save
- And Delete it.
Another case is you don’t have resource on the operation. Solution is go to Operation, right click to add Scheduling Resources.