Message type: E = Error
Message class:  PPC1DM - PP Backflush: Database Management and Communication 
Message number: 017
Message text: No sales order specified although components from special stock
The component should be withdrawn from an individual customer stock
(SOBKZ is not blank). However, the specification of the sales order or
the WBS element is missing at the header or component level (not in IS
Auto 2.0). The system cannot determine from which individual customer
stock the component is to be withdrawn.
The system rejects the backflush.
Check whether the component should be withdrawn from the wareshouse. In
this case, the special stock indicator should not be set.
Check whether a sales order exists. The sales order must be recorded in
the header record.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message PPC1DM017 indicates that there is an issue with the processing of a production order or a related document where the system expects a sales order to be specified, but it is not provided. This error typically arises in scenarios involving special stock, such as consignment stock or stock in transit, where the system requires a reference to a sales order to manage the stock appropriately.
Cause: Missing Sales Order Reference: The primary cause of this error is that the system expects a sales order reference for components that are being drawn from special stock, but none has been specified.
Configuration Issues: There may be configuration settings in the system that require a sales order for certain types of stock movements or production processes. Data Entry Errors: Users may have inadvertently omitted the sales order number when creating or processing the production order or related documents.
Solution: Specify a Sales Order: Ensure that
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