Message type: E = Error
Message class:  /DSD/SV -  
Message number: 303
Message text: Only display possible. Data referring to shipment &1 are locked by &2.
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The SAP error message /DSD/SV303 Only display possible. Data referring to shipment &1 are locked by &2 typically occurs in the context of the SAP Direct Store Delivery (DSD) module. This message indicates that the data related to a specific shipment (identified by &1) is currently locked by another user or process (identified by &2), preventing any modifications to that data.
Cause: Data Locking: The primary cause of this error is that the shipment data is being accessed or modified by another user or transaction. SAP uses a locking mechanism to prevent data inconsistencies, and when one user is working on a record, it is locked for others. Long-running Transactions: If a transaction takes a long time to complete, it can hold locks on the data longer than expected. User Sessions: Sometimes, a user may have multiple sessions open, and one session may be locking the data while another tries to access it.
Solution: Wait and
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