How To Fix DT858 - & is added as & to the key of the table

DT858 - Overview

• Message type: E = Error

• Message class: DT - Table activation (incl. indexes)

• Message number: 858

• Message text: & is added as & to the key of the table

What causes this issue?

The include being processed was added by SAP to the key of the table.
It is added to the end of the key.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.

DT858 - Details

• The SAP error message DT858 typically indicates an issue related to the data type or structure of a table field, particularly when it comes to the use of special characters like "&" in the key of a table. This error can arise in various contexts, such as during data entry, report generation, or when executing certain transactions.
  
  Cause:
  
  Invalid Characters: The presence of special characters (like "&") in the key fields of a table can lead to issues, as these characters may not be allowed or may have special meanings in certain contexts.
  Data Type Mismatch: The error may also occur if there is a mismatch between the expected data type of a field and the actual data being processed.
  
  Configuration Issues: Sometimes, the error can stem from incorrect configuration settings in the SAP system or in the specific module being used.
  
  
  Solution:
  
  Check Key Fields: Review the key fields of the table in question and