Message type: E = Error
Message class:  RSODSO_SID -  
Message number: 002
Message text: SID generation already completed in the source. Step will be skipped
SID generation already completed in the source. Step will be skipped
The data to be processed originates from a source, which ensures that
SID values exist for all the relevant characteristics.
No data was manipulated during the transfer to the current DataStore
object. Therefore the "SID Determination" step can be skipped.
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 RSODSO_SID002 indicates that the SID (Surrogate ID) generation process for a DataStore Object (DSO) has already been completed in the source system, and as a result, the current step in the data loading process will be skipped. This typically occurs during the data extraction or loading process in SAP BW (Business Warehouse) when the system detects that the SID generation has already been performed for the data being processed.
Cause: Duplicate Execution: The SID generation process may have been executed previously for the same data set, leading to the message that it has already been completed. Data Consistency: The data being loaded may not require SID generation again because it has not changed since the last load. Process Flow: The data load process may be incorrectly configured, leading to the SID generation step being skipped.
Solution: Check Previous Loads: Review the previous data load processes to confirm if the SID generation was
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
RSODSO_SID001 Error while initializing RAW structures
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
RSODSO_SETTING007 DataStore &1 is not of type "Standard". No values to be maintained.
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
RSODSO_SID003 SIDs for char. &1 were created in source. Characteristic will be skipped
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
RSODSO_SID004 Could not find any new values for characteristic &1
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.