Message type: E = Error
Message class:  USMD_CONV_SOM_GOV - Messages from the Convenience API 
Message number: 009
Message text: Object list of change request &1 is empty; saving not possible
The current change request does not contain any data changes.
The system cannot save the current change request.
To continue processing the change request, change some of the data
before saving.
To end the processing of the change request, choose the appropriate
button (e.g. Reject, Withdraw).
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 USMD_CONV_SOM_GOV009 indicates that the object list of a change request is empty, which prevents the saving of the change request. This error typically occurs in the context of SAP Master Data Governance (MDG) when trying to save a change request that does not have any objects associated with it.
Cause: No Objects Selected: The most common cause is that no objects (e.g., master data records) were selected or added to the change request before attempting to save it. Incorrect Configuration: There may be issues with the configuration of the change request type or the data model that prevents objects from being added. Authorization Issues: The user may not have the necessary authorizations to add objects to the change request. Technical Issues: There could be underlying technical issues or bugs in the system that are preventing the objects from being recognized.
Solution: Check Object Selection: Ensure that you have selected the appropriate objects to
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
USMD_CONV_SOM_GOV008 To be locked entities are assigned to change request &1
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
USMD_CONV_SOM_GOV007 To be locked entities are assigned to a different change request than &1
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
USMD_CONV_SOM_GOV010 Change request creation not possible as change request &1 already exists
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
USMD_CONV_SOM_GOV011 Creation of change request is not possible as changes exist
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
Click on this link to search all SAP messages.