How To Fix DT859 - Field & is added to the key of the table

DT859 - Overview

• Message type: E = Error

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

• Message number: 859

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

What causes this issue?

The field 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.

Smart SAP Assistant

• What is the cause and solution for SAP error message DT859 - Field & is added to the key of the table ?

  The SAP error message DT859 indicates that a field has been added to the key of a database table. This typically occurs when there is a change in the structure of a table, particularly when a new field is added to the primary key or unique key of the table. This can lead to issues with data consistency, indexing, and performance.
  
  Cause:
  
  Table Structure Change: The most common cause of this error is that a field has been added to the key of a table, which can happen during a transport of changes or when modifying the data dictionary.
  Data Inconsistency: If there are existing records in the table that do not comply with the new key definition, this can trigger the error.
  Dependent Objects: Other database objects (like views, indexes, or foreign key relationships) may be affected by this change, leading to inconsistencies.
  
  
  Solution:
  
  Check Table Structure: Review the changes made to the table structure.