In SAP ECC 6, We have a sales order with item category ZSE(Service) and for this item category in vov7 the special stock field in 'Blank'. When we are doing MB1A with movement type 231 'E' and it gives a warning message 'Sales order (SOBKZ = ) is not provided for this goods movement'. However when we change the special stock as 'E' for the item category ZSE in vov7 and then tried doing MB1A with movement type 231 'E', it does not give any warning message. The question is, in SAP 4.6 B, even when in the item category ZSE, special stock field is 'Blank' and tried doing MB1A with 231 'E' the above warning message was not coming. After upgrading from 4.6 B to ECC 6.0, the above scenario was not working. Please guide me how to fix this issue.