How To Fix KE790 - & is not an allowed field name for index

SAP Error Message - Details

• Message type: E = Error

• Message class: KE -

• Message number: 790

• Message text: & is not an allowed field name for index

What causes this issue?

You chose an invalid field name for a database index.
You can only use those fields which are defined with "*" in the
summarization level for the database index.

System Response

The system did not accept your entry.

How to fix this error?

Choose F4 to receive a list of the valid field names, and correct your
entry.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message KE790 - & is not an allowed field name for index ?

  The SAP error message KE790 typically indicates that there is an issue with the field name being used in a report or query related to the Controlling (CO) module. The message states that the specified field name is not allowed for indexing, which usually means that the field is either not defined correctly or is not suitable for the operation being performed.
  Cause:
  
  Invalid Field Name: The field name specified in the report or query may not be valid or recognized by the system.
  Field Not Indexed: The field may not be indexed in the database, which means it cannot be used in certain operations that require indexing.
  Configuration Issues: There may be configuration issues in the Controlling module or in the specific report/query being executed.
  Data Model Changes: Changes in the data model or structure of the database may have rendered the field obsolete or invalid.
  
  Solution:
  
  Check Field Name: Verify that the field name used in the report or query is correct and exists in the database. Ensure that it is spelled correctly and follows the naming conventions.
  Review Indexing: Check if the field is indexed in the database. If it is not, you may need to create an index for that field or use a different field that is indexed.
  Consult Documentation: Refer to SAP documentation or help resources to understand the specific requirements for field names and indexing in the context of your report or query.
  Adjust Configuration: If the issue is related to configuration, you may need to adjust the settings in the Controlling module or the specific report/query configuration.
  Contact SAP Support: If the issue persists, consider reaching out to SAP support for assistance. They can provide guidance based on the specific context of your system and the error message.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error message or provide additional troubleshooting steps.
  Transaction Codes: Familiarize yourself with transaction codes related to Controlling (e.g., KOB1, KSB1) to analyze data and configurations.
  User Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the cause of the KE790 error and implement a suitable solution.