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How to change priority for sales order delivery in atp check ?

Hello SAP gurus,

I am facing a problem where 100 pcs in unrestricted stock and one job order of 100 pcs also one sales order for 125 pcs and STO for 75 pcs.

While doing atp check both sales order ans sto are confirming the qty. But when doing delivery for sales order first then it is picking only 25 pcs.

But we need that sales order should pick the 100 pcs from unrestricted stock. Why this is happening that stock is reserving for STO and balance is free for sales order which is only 25 pcs. How can i solve this issue ? Pls answer asap.

Thanks & Regards


Former Member

Hi Deven,

When you deliver the sales order, the system will check availability using checking rule "B". In your example, you have the following:

100 in stock.

125 confirmed in Sales order

75 confirmed in STO.

So 200 confirmed but only 100 in stock. This can happen if your checking rules are set up to check with RLT (End Lead Time).

Deliver the sales order, system will calculate the available quantity as:

Stock of 100 - (125 + 125) - 75 = 25.

By considering the STO in checking rule B, the system will only ever give you an available quantity = 25. If you do not want the STO to be considered here, you need to change your "Scope of Check" settings in OVZ9, where you can set "incl. rel. order. reqs" to blank. This will mean the system calculates the available quantity as:

Stock of 100 - (125 + 125)  = 100.

Hope this helps.

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