Message type: E = Error
Message class:  UPO_MIG - Message Class for PRA->UOM Migration 
Message number: 127
Message text: Well Class description not found for &1
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 UPO_MIG127, which states "Well Class description not found for &1," typically occurs in the context of well management or oil and gas industry applications within SAP. This error indicates that the system is unable to find a description for a specified well class, which is likely due to missing or incorrect configuration in the system.
Cause: Missing Well Class Description: The well class that is referenced in the transaction or process does not have a corresponding description in the system. Incorrect Configuration: The well class may not be properly configured in the system, or it may have been deleted or not created at all. Data Migration Issues: If data has been migrated from another system, there may have been issues during the migration process that resulted in missing descriptions. Authorization Issues: Sometimes, the user may not have the necessary authorizations to view or access the well class descriptions.
Solution: Check Well Class Configuration: Navigate
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
UPO_MIG126 All configuration steps are already inserted
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
UPO_MIG125 Configuration steps for migration created successfully
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
UPO_MIG128 &1 Well Class code already exist in UOM
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
UPO_MIG129 All the VT will be migrated as no VT were selected in migration table &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.