Message type: E = Error
Message class:  CNV20317 -  
Message number: 056
Message text: Only display mode possible; see long text
A toggle to Edit Mode is not possible because the system lock for the
data could not be set..
Check if any other user has already locked the data you want to edit.
Check if a predecessor program of your activity has not been executed
correctly.
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 CNV20317056, which states "Only display mode possible; see long text," typically occurs in the context of data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that the system is currently in a state where it can only display data rather than allow modifications or updates.
Cause: Data Locking: The system may be in a state where the data is locked for editing, possibly due to ongoing processes or transactions. Authorization Issues: The user may not have the necessary authorizations to perform changes in the system. Configuration Settings: Certain configuration settings may restrict the ability to modify data. Migration Process State: The migration process may be in a phase where only display operations are allowed, such as during validation or review stages.
Solution: Check Data Locking: Ensure that no other processes are locking the data. You can check for locks using transaction code SM12
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