Message type: E = Error
Message class:  CNV_LTHCM_S_10 - LT HCM: Message Class for Data Selection 
Message number: 015
Message text: HCM object selection assignment could not be saved; check consistency
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 CNV_LTHCM_S_10015 typically occurs during the process of data migration or conversion, particularly when working with HCM (Human Capital Management) objects in the context of the SAP Landscape Transformation (SLT) or similar tools. This error indicates that there is an issue with the assignment of HCM objects, and it suggests that the system could not save the assignment due to consistency checks failing. Causes: Data Inconsistency: The most common cause is that the data being processed has inconsistencies. This could be due to missing mandatory fields, incorrect data formats, or relationships between objects that are not properly defined.
Configuration Issues: There may be configuration settings in the HCM module that are not aligned with the data being imported or converted. Authorization Issues: The user executing the operation may not have the necessary authorizations to perform the action. Technical Errors: There could be underlying technical issues, such as database locks or problems with
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
CNV_LTHCM_S_10014 Specified HCM object selection ID &1 does not exist
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_LTHCM_S_10013 HCM object selection ID &1 (&2) locked
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_LTHCM_S_10016 Specify way of selecting relationships
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_LTHCM_S_10017 HCM object selection ID &1 (&2) created
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.