How To Fix AD611 - Table & already contains tables: Field cannot be changed

AD611 - Overview

• Message type: E = Error

• Message class: AD - Data Dictionary application messages

• Message number: 611

• Message text: Table & already contains tables: Field cannot be changed

What causes this issue?

You tried to change a table pool that already contains pooled tables.
Pool definitions may not be changed if tables are already in the pool.

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?

Check whether you really need to make this change.
If so, you first have to delete all pooled tables from this pool.
Pooled tables cannot be deleted if they still contain data.

Error message extract from SAP system. Copyright SAP SE.

AD611 - Details

• The SAP error message AD611 indicates that there is an attempt to change a field in a database table that already contains data, which is not allowed in certain circumstances. This error typically arises when you are trying to modify the structure of a table (like changing the data type of a field or altering its properties) that already has existing entries.
  
  Cause:
  
  Existing Data: The field you are trying to change already has data in it, and the change you are attempting to make is incompatible with the existing data.
  Data Type Change: Changing the data type of a field (e.g., from CHAR to INT) can lead to this error if the existing data cannot be converted to the new type.
  Field Properties: Modifying properties such as length, decimal places, or key attributes of a field that already contains data can trigger this error.
  
  
  Solution:
  
  Data Backup: Before making any changes, ensure that you have