Message type: E = Error
Message class:  RSO_RES_ADSO - Datastore Object 
Message number: 238
Message text: - SID Determination Mode of '&1' changed from '&2' to '&3'
Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.
To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.
Unfortunately, there isn't any extra information in this error notice.
First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).
Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.
You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.
The SAP error message RSO_RES_ADSO238 indicates that there has been a change in the SID (Surrogate ID) determination mode for an ADSO (Advanced DataStore Object). This message typically arises in the context of data modeling and data loading processes in SAP BW/4HANA or SAP BW on HANA environments.
Cause: The error message is triggered when the SID determination mode for a characteristic in an ADSO is changed. The SID determination mode can be set to different options, such as: Automatic: SIDs are generated automatically during data loading. Manual: SIDs are assigned manually. Not Assigned: No SIDs are assigned. The message indicates that the SID determination mode has changed from one state (&2) to another (&3), which can lead to inconsistencies or issues during data processing or loading.
Solution: To resolve this issue, you can take the following steps: Check the ADSO Configuration: Go to the ADSO in the SAP BW modeling tools and check the SID determination settings for the
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
RSO_RES_ADSO237 DB view for reporting of aDSO '&1' is corrupt
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
RSO_RES_ADSO236 DB view for extraction of aDSO '&1' is corrupt
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
RSO_RES_ADSO239 - SID Determination Mode of '&1' will be changed from '&2' to '&3'
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
RSO_RES_ADSO240 '&1': Multiple initialization of reference point
What causes this issue?  An attempt was made to load an initialization (field 'recordtp' = 1) into the system although there is already a re...
Click on this link to search all SAP messages.