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Re: debug on atp check functions

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There are many functions called during the ATP check. Some of them are:

 

- AVAILABILITY_CHECK_CONTROLLER

- AVAILABILITY_CHECK_SERVER

- AVAILABILITY_CHECK_EXECUTE

- AVAILABILITY_CHECK

- STOCK_RECEIPT_ISSUE_READ

- ATP_CHECK_BASIS

 

They are all involved in executing the ATP check. For example, AVAILABILITY_CHECK_CONTROLLER is used to call function AVAILABILITY_CHECK with the appropriate parameters (e.g. in VL01n, P_ATPCSX-PRREG = "B" but in VA01, it = "A").

Function STOCK_RECEIPT_ISSUE_READ is used to collect all the stocks, receipts & requirements into internal tables that can later be used by ATP_CHECK_BASIS to calculate the actual available stock. Function AVAILABILITY_CHECK is used to check your scope of check settings. AVAILABILITY_CHECK_EXECUTE is used to set locks etc. All these functions are pretty much inter-connected and together allow the system to execute the availability check. It is not logical to compare FM AVAILABILITY_CHECK_CONTROLLER with ATP_CHECK_BASIS


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