How To Fix T9491 - Conversion of table &1 no longer possible

T9491 - Overview

• Message type: E = Error

• Message class: T9 - Time zones/streams

• Message number: 491

• Message text: Conversion of table &1 no longer possible

What causes this issue?

Conversion is not possible since new entries have been made in the
table. This indicates that the conversion (XPRA) was started manually,
not during a release upgrade.

System Response

The conversion (XPRA) is canceled.

How to fix this error?

Check in the tables and manually in TTZ5S whether exactly one entry is
flagged as default for each country (view V_TTZ5) or country/region
(view V_TTZ5S).

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message T9491 - Conversion of table &1 no longer possible ?

  The SAP error message T9491, which states "Conversion of table &1 no longer possible," typically occurs during the process of data conversion or migration, particularly when dealing with changes in the database structure or when attempting to convert a table that has been modified or is no longer compatible with the current system configuration.
  Causes:
  
  Table Structure Changes: The structure of the table has been altered (e.g., fields added, removed, or changed) in a way that makes the conversion incompatible.
  Data Type Changes: Changes in data types of fields within the table can lead to conversion issues.
  Missing or Incompatible Data: The data in the table may not meet the requirements for conversion, such as constraints or data integrity issues.
  System Upgrade or Patch: If the system has been upgraded or patched, certain tables may no longer be supported or may require a different conversion approach.
  Custom Modifications: Custom developments or modifications to standard tables can