Message type: E = Error
Message class:  CNV_CMIS_M - Message class for CMIS Migration 
Message number: 237
Message text: All conversion rules for package & have mapping values
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_CMIS_M237 indicates that there are no mapping values defined for the conversion rules in a specific package. This error typically arises during data migration or conversion processes, particularly when using SAP's Conversion Tools or the SAP S/4HANA Migration Cockpit.
Cause: The error occurs when: The conversion package specified does not have any mapping values defined for the conversion rules. The mapping values may not have been created or imported correctly. There may be an issue with the configuration of the conversion package itself.
Solution: To resolve this error, you can take the following steps: Check Mapping Values: Go to the transaction or tool where the conversion package is defined. Verify that the mapping values for the conversion rules are correctly defined and populated. Define Mapping Values: If mapping values are missing, you will need to create them. This can typically be done in the migration cockpit or the relevant conversion tool. Ensure that the mapping values correspond to the
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
CNV_CMIS_M236 Function &1 returned with an exception
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_CMIS_M235 No tables exist for the selected rule name
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_CMIS_M238 Not all rules for package & have mapping values
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_CMIS_M239 No values could be found in the known conflicts table
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.