How To Fix AD602 - No further key fields are specified in table &

SAP Error Message - Details

• Message type: E = Error

• Message class: AD - Data Dictionary application messages

• Message number: 602

• Message text: No further key fields are specified in table &

What causes this issue?

The pool structure contains only one key field TABNAME.

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?

A pool must have at least two key fields (TABNAME and VARKEY). Please
define the field VARKEY. Create the field VARKEY, which contains the
key fields of the pooled tables.
INCLUDE ADIC-POOL-STRUCTURE

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AD602 - No further key fields are specified in table & ?

  The SAP error message AD602 ("No further key fields are specified in table &") typically occurs when you are trying to create or modify a table in the Data Dictionary (SE11) or when you are working with a database table that does not have a primary key defined. This error indicates that the system requires at least one key field to uniquely identify records in the table.
  Cause:
  
  Missing Key Fields: The table you are trying to work with does not have any key fields defined. Every database table must have at least one key field to ensure that each record can be uniquely identified.
  Incorrect Table Definition: The table might have been defined incorrectly, or the key fields may have been removed or not set properly.
  
  Solution:
  To resolve the AD602 error, you need to ensure that the table has at least one key field defined. Here are the steps to do this:
  
  
  Open the Data Dictionary:
  
  Go to transaction code SE11 (Data Dictionary).
  
  
  
  Select the Table:
  
  Enter the name of the table that is causing the error and click on the "Display" button.
  
  
  
  Check Key Fields:
  
  In the table definition, navigate to the "Fields" tab and check if any fields are marked as key fields. Key fields are usually indicated with a key icon or marked in the "Key" column.
  
  
  
  Define Key Fields:
  
  If there are no key fields, you need to define at least one. To do this:
  
  Select the field(s) that you want to set as key fields.
  Click on the "Key" checkbox for those fields.
  Ensure that the selected field(s) can uniquely identify records in the table.
  
  
  
  
  
  Save and Activate:
  
  After defining the key fields, save your changes and activate the table. This should resolve the error.
  
  
  
  Testing:
  
  After activation, test the table to ensure that the error no longer occurs.
  
  
  
  Related Information:
  
  Primary Key: A primary key is a field (or a combination of fields) that uniquely identifies each record in a table. It is essential for maintaining data integrity and for efficient data retrieval.
  Database Design: Proper database design involves careful consideration of key fields to ensure that data can be accessed and manipulated efficiently.
  SAP Documentation: For more detailed information, refer to SAP's official documentation or help resources related to Data Dictionary and table definitions.
  
  If you continue to experience issues after following these steps, it may be helpful to consult with a technical SAP consultant or check SAP community forums for additional insights.