Message type: E = Error
Message class:  /SCA/SDPR_PUBLIC -  
Message number: 006
Message text: &3/&4 missing purchase order schedule line &1
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The SAP error message /SCA/SDPR_PUBLIC006 &3/&4 missing purchase order schedule line &1 typically indicates that there is a missing schedule line for a purchase order in the system. This error can occur in various scenarios, particularly in the context of sales and distribution (SD) or materials management (MM) processes.
Cause: Missing Schedule Line: The most direct cause of this error is that the specified purchase order does not have a corresponding schedule line for the requested item. Schedule lines are used to specify delivery dates and quantities for items in a purchase order. Incorrect Purchase Order Number: The purchase order number provided in the transaction may be incorrect or does not exist in the system. Data Inconsistency: There may be inconsistencies in the data between the sales order and the purchase order, such as mismatched item numbers or quantities. System
Configuration Issues: There could be configuration issues in the SAP system that affect how purchase
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