SUMMARY: Cannot enable API settings on a Sub Object of a Sub Object
STEPS TO REPRODUCE:
1. Create a new Object, and make it a Sub Object of "Status Report"
NOTE: Status Report is a Sub Object of "Project"
2. Attempt to enable API on the Object and click "Save"
The Object should be enabled for API usage
An error is received: "ODF-0248: Cannot API enable custom sub-object."