How To Fix AD341 - Key to table & changed, data exists (F1)

SAP Error Message - Details

• Message type: E = Error

• Message class: AD - Data Dictionary application messages

• Message number: 341

• Message text: Key to table & changed, data exists (F1)

What causes this issue?

You have changed the key to the table in the ABAP/4 Dictionary.
However, a physical table containing data already exists in the
database for this table. To ensure system consistency, the definition
of the database table must be adjusted to correspond to the logical
table definition in the ABAP/4 Dictionary.

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?

Convert the table using the database utility (SE14). To do this,
selection the <LS>Convert</> function in the utility for database
tables. The data in the table is kept when the table is converted.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AD341 - Key to table & changed, data exists (F1) ?

  The SAP error message AD341 ("Key to table & changed, data exists") typically occurs when there is an attempt to change a key field in a table where data already exists. This error is common in scenarios where you are trying to modify a primary key or a unique key field in a database table that has existing entries.
  Cause:
  
  Key Field Modification: You are trying to change a field that is part of the primary key or a unique index in a table that already contains data.
  Data Integrity: SAP enforces data integrity rules, and changing key fields can lead to inconsistencies in the database.
  Foreign Key Dependencies: There may be foreign key relationships that depend on the key you are trying to change.
  
  Solution:
  
  Check Data Dependencies: Before making changes, check if there are any existing records that depend on the key you are trying to modify. You may need to delete or update these records first.
  Use a Different Approach: If you need to change the key, consider creating a new record with the desired key values and then deleting the old record if it is no longer needed.
  Consult Documentation: Review the relevant SAP documentation or consult with your SAP Basis or ABAP team to understand the implications of changing key fields.
  Transaction Codes: If you are using a specific transaction code, ensure that you are following the correct procedure for that transaction.
  Data Migration: If you are performing a data migration or upload, ensure that the data being uploaded does not conflict with existing keys in the database.
  
  Related Information:
  
  Transaction Codes: Depending on the context, you might be using transaction codes like SE11 (Data Dictionary), SE14 (Database Utility), or SE37 (Function Builder) to manage database tables.
  SAP Notes: Check SAP Notes for any specific guidance or patches related to this error message.
  Data Dictionary: Familiarize yourself with the Data Dictionary (SE11) to understand the structure of the tables and the relationships between them.
  Testing: Always test changes in a development or quality assurance environment before applying them to production.
  
  If the issue persists after following these steps, it may be beneficial to engage with SAP support or your internal SAP team for further assistance.