How To Fix DT808 - Field & is contained in the key of the table

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 808

• Message text: Field & is contained in the key of the table

What causes this issue?

The field involved is contained in the old version of the table as a
non-key field and in the new version as a key field.

System Response

From now on the field is handled as a key field of the table.

How to fix this error?

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DT808 - Field & is contained in the key of the table ?

  The SAP error message DT808 typically indicates that a field is contained in the key of a table, which means that the field you are trying to modify or use in a certain context is part of the primary key of a database table. This can occur in various scenarios, such as when you are trying to change the structure of a table, create a new entry, or modify an existing entry.
  Cause:
  
  Primary Key Constraint: The field you are trying to modify is part of the primary key of the table. In SAP, primary keys are used to uniquely identify records in a table, and certain operations (like changing the value of a key field) are restricted.
  Data Integrity: SAP enforces data integrity rules, and modifying key fields can lead to inconsistencies in the database.
  
  Solution:
  
  Avoid Modifying Key Fields: If you are trying to change the value of a key field, consider whether this is necessary. If you need to change the data, you may need to delete the existing record and create a new one with the desired key values.
  Check Table Structure: Review the structure of the table to understand which fields are part of the primary key. You can do this using transaction codes like SE11 (Data Dictionary) to view the table definition.
  Use Alternative Fields: If you need to store additional information, consider using non-key fields or creating a new table that references the original table.
  Consult Documentation: Refer to SAP documentation or consult with your SAP administrator or developer for guidance on how to handle the specific situation you are facing.
  
  Related Information:
  
  Transaction Codes: SE11 (Data Dictionary), SE14 (Database Utility), SE80 (Object Navigator).
  SAP Notes: Check SAP Notes for any specific issues related to the table you are working with.
  Data Dictionary: Familiarize yourself with the data dictionary in SAP to understand the relationships and constraints of the tables you are working with.
  
  If you continue to face issues, it may be helpful to provide more context about the specific operation you are trying to perform, as well as the table and fields involved. This can help in diagnosing the problem more accurately.