Sales Order line stuck at “Create Supply Order – Eligible”.

In this blog I will explain why some time Sales Order line stuck at “Create Supply Order – Eligible” , and every attemept to progress it push the workflow to SHIP activity but then again back to Create Supply activity with result = Unreserve. I have notice that this is very common issue that customer encounter , Workflow for order line looks good and at SHIP_LINE – Notified , but then it go backs ro “Create Supply ” workflow activity with Result code = Unreserve.
In Order management we have different kinds of flows and their is possibility that this issue MAY appears in any type of flow (ONE and ONLY reason for this type of issues is DATA CORRUPTION).In this blog I will explain only why that has happend in Back to Back Orders.

Reason is very Simple - When a requisition gets created for a Sales Order line, order line gets reserved to this requisition. When sub inventory information is changed for this line, this reservation gets deleted and line moves back to Supply Eligible state.Point I want to explain here is if any changes made to back to back order line that impact the values like
Schedule ship date,
Subinventory,
Quanity etc.
Sales Order line moves back to Supply Eligible state.