How To Fix TR158 - Table belongs to class '&' and not to class 'E' or 'G'

SAP Error Message - Details

• Message type: E = Error

• Message class: TR - Change and Transport System

• Message number: 158

• Message text: Table belongs to class '&' and not to class 'E' or 'G'

What causes this issue?

A table which does not have class <ZH>E</> or <ZH>G</> was entered.
Name ranges can only be reserved for tables belonging to class <ZH>E</>
or <ZH>G</>.

System Response

Name ranges are not entered for this table.

How to fix this error?

The table class of the affected table should be checked and changed to
<ZH>E</> or <ZH>G</> if necessary.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message TR158 - Table belongs to class '&' and not to class 'E' or 'G' ?

  The SAP error message TR158 indicates that there is an issue with the transport of a table that belongs to a specific class, but the system is expecting it to belong to a different class. Specifically, the message states that the table belongs to class '&' and not to class 'E' or 'G'. 
  Cause:
  This error typically occurs when you are trying to transport a table that is not classified correctly according to the transport layer's expectations. In SAP, objects are classified into different classes, and each class has specific rules regarding transport. The classes 'E' (for customizing) and 'G' (for repository objects) are commonly used for transport purposes. If a table is classified under a different class (like 'A' for application objects), it cannot be transported in the same way.
  Solution:
  To resolve this issue, you can take the following steps:
  
  
  Check the Table Class: Verify the class of the table that is causing the error. You can do this by using transaction SE11 (Data Dictionary) and checking the attributes of the table.
  
  
  Change the Table Class: If the table is incorrectly classified, you may need to change its classification. This can be done in the table's definition in SE11. However, changing the class of a table may have implications, so ensure that this is appropriate for your scenario.
  
  
  Transport Request: If the table is correctly classified but you are still facing issues, ensure that the transport request you are using is appropriate for the type of object you are trying to transport. You may need to create a new transport request that matches the class of the table.
  
  
  Consult Documentation: Review SAP documentation or consult with your SAP Basis team to understand the implications of changing object classes and to ensure compliance with your organization's transport strategy.
  
  
  Check Transport Layer: Ensure that the transport layer is correctly configured and that the transport routes are set up properly.
  
  
  Use Transaction SE09/SE10: You can also check the transport requests in transactions SE09 or SE10 to see if there are any inconsistencies or issues with the requests.
  
  
  Related Information:
  
  Transport Classes: Understanding the different transport classes in SAP can help you manage your objects better. Classes 'E' and 'G' are typically used for customizing and repository objects, respectively.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional guidance.
  SAP Community: Engaging with the SAP Community can provide insights from other users who may have encountered similar issues.
  
  If the problem persists after following these steps, it may be beneficial to reach out to SAP support for further assistance.