How To Fix DT281 - Table name & is not in a valid namespace

DT281 - Overview

• Message type: E = Error

• Message class: DT - Table activation (incl. indexes)

• Message number: 281

• Message text: Table name & is not in a valid namespace

What causes this issue?

You used a table name which does not lie in a valid namespace.

System Response

Activation of the table is rejected.

How to fix this error?

Choose another table name.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DT281 - Table name & is not in a valid namespace ?

  The SAP error message DT281 indicates that a specified table name is not in a valid namespace. This typically occurs when you are trying to access or create a table that does not conform to the naming conventions or namespace rules defined in the SAP system.
  
  Cause:
  
  Invalid Namespace: In SAP, tables are organized into namespaces. Standard SAP tables are usually prefixed with "T" or "Z" for custom tables. If you try to create or access a table with an invalid prefix or outside the allowed namespace, you will encounter this error.
  Typographical Error: There may be a typo in the table name you are trying to access or create.
  Development Class Issues: If you are working in a development class that does not allow certain namespaces, this error can occur.
  Transport Layer Issues: If the table is being transported from one system to another and the namespace is not recognized in the target system,