How To Fix AD340 - Field definitions for table & changed, data exists (F1)

SAP Error Message - Details

• Message type: E = Error

• Message class: AD - Data Dictionary application messages

• Message number: 340

• Message text: Field definitions for table & changed, data exists (F1)

What causes this issue?

You have changed the definition of fields of the table in the ABAP/4
Dictionary. However, a physical table containing data has already been
created in the database for this table. To ensure system consistency,
you must adjust the definition of the database table 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, select
the <LS>Convert</> function in the utility for database tables. The
data in the table is kept when you convert the table.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AD340 - Field definitions for table & changed, data exists (F1) ?

  The SAP error message AD340 indicates that there is a mismatch between the field definitions of a table and the data that currently exists in that table. This typically occurs when changes have been made to the structure of a database table (such as adding or removing fields) but the existing data does not conform to the new structure.
  Cause:
  
  Table Structure Change: The most common cause is that the structure of the table has been modified (e.g., fields added, removed, or changed) after data has already been entered into the table.
  Inconsistent Data: The existing data in the table may not comply with the new field definitions, leading to inconsistencies.
  Transport Issues: If changes were transported from one system to another (e.g., from development to production), and the data was not properly adjusted, this error can occur.
  
  Solution:
  
  Check Table Structure: Review the current structure of the table in the Data Dictionary (SE11) to understand what changes have been made.
  Data Adjustment: If necessary, adjust the existing data to comply with the new field definitions. This may involve:
  
  Deleting or modifying records that do not meet the new structure.
  Updating the data to fit the new field definitions.
  
  
  Re-transport Data: If the issue arose due to a transport, ensure that the transport includes the necessary adjustments to the data or that the data is consistent with the new structure.
  Use Transaction SE14: You can use transaction SE14 (Database Utility) to adjust the database table. This transaction allows you to activate the table and adjust the data accordingly.
  Consult Documentation: Review any documentation related to the changes made to the table to ensure that all necessary adjustments have been made.
  
  Related Information:
  
  Transaction Codes: SE11 (Data Dictionary), SE14 (Database Utility), SE37 (Function Module), SE80 (Object Navigator).
  SAP Notes: Check SAP Notes for any known issues or patches related to the specific table or error message.
  Backup Data: Always ensure that you have a backup of your data before making any structural changes to the database.
  Testing: After making changes, thoroughly test the application to ensure that the changes do not introduce new issues.
  
  If the problem persists after following these steps, it may be beneficial to consult with your SAP Basis team or SAP support for further assistance.