You must specify a valid bill for this bill revision

 While Creating Sales order for ATO/PTO Model or Kit Items We Encounter this Error.

You must specify a valid bill for this bill revision

Reason

1.Bill Has not been Created on Item 

2.OE:Item Validation Organization is not Set Correctly.

3.Common Bills has not been Created in Child Org Through Which the Shipping has to be Done

Solution:

Check Whether Bill is Created in Master org . Create One if Not already Created

Check and Correct the OE:Item Validation Organization

Check Whether Common Bill has been Created at Child (or) Shipping Organization.

If not Created run the Concurrent program "Create Common Bills".