How To Fix DA556 - Inconsistencies between nametab and DB in the following columns

DA556 - Overview

• Message type: E = Error

• Message class: DA - Dictionary: Compare, distribution, timer, instantiation

• Message number: 556

• Message text: Inconsistencies between nametab and DB in the following columns

What causes this issue?

When a table is activated, a runtime object (nametab) is generated
which summarizes the the table information relevant to the runtime
environment. The components of the runtime environment (ABAP/4
programs, Screen Painter, etc.) get the information for the table from
this runtime object. The definitions in the nametab for the fields
in the list which follows are different to those in the database.

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?

Please check how this inconsistency between the nametab and the
database came about. You can eliminate it using the the database
utility (SE14).

Error message extract from SAP system. Copyright SAP SE.

DA556 - Details

• The SAP error message DA556 indicates that there are inconsistencies between the name table (nametab) and the database (DB) for specific columns in a data structure. This typically occurs in the context of data dictionary objects, such as tables or views, where the metadata in the name table does not match the actual structure in the database.
  
  Cause:
  
  Changes in Data Dictionary: If there have been recent changes to the data dictionary (like adding or removing fields) without properly updating the database, inconsistencies can arise.
  Transport Issues: If changes were transported from one system to another (e.g., from development to production) and the transport did not complete successfully, this can lead to mismatches.
  Database Issues: Corruption or issues in the database itself can also lead to inconsistencies.
  Manual Changes: Direct changes made to the database outside of the SAP environment can cause discrepancies.
  
  
  Solution:
  
  Check for Transport Errors: Review the transport logs to ensure that all changes