How To Fix CNV_PE400 - Object &1 (&2) must not be transported due to different system namespace

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_PE - General messages for posting engine

• Message number: 400

• Message text: Object &1 (&2) must not be transported due to different system namespace

What causes this issue?

Object <ZH>&V1&</> of type <ZH>&V2&</> has namespace <ZH>&V3&</> whereas
the current client has namespace <ZH>&V4&</>. This indicates that the
object was not originally created in the current client.
A transport of a posting engine object is only allowed from a system
with at least the same namespace.

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?

No further action possible.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_PE400 - Object &1 (&2) must not be transported due to different system namespace ?

  The SAP error message CNV_PE400 indicates that an object (identified by &1 and &2) cannot be transported due to a mismatch in the system namespace. This typically occurs during the transport of objects between different SAP systems, especially when the source and target systems have different configurations or namespaces.
  Cause:
  
  Namespace Mismatch: The object you are trying to transport belongs to a different namespace than what is allowed in the target system. SAP uses namespaces to differentiate between standard SAP objects and custom objects. For example, standard SAP objects usually reside in the SAP namespace, while custom objects might be in a namespace like Z* or Y*.
  Transport Layer Configuration: The transport layer settings in the source and target systems may not be aligned, leading to restrictions on what can be transported.
  Development Class Issues: The object may belong to a development class that is not allowed to be transported to the target system.
  
  Solution:
  
  Check Object Namespace: Verify the namespace of the object you are trying to transport. Ensure that it matches the allowed namespaces in the target system.
  Adjust Transport Layer Settings: If you have the necessary authorizations, check the transport layer settings in both the source and target systems. Ensure that they are configured to allow the transport of the object.
  Change Development Class: If the object is in a development class that is not transportable, consider moving it to a transportable development class or creating a new object in the correct namespace.
  Manual Transport: If automatic transport is not possible, you may need to manually recreate the object in the target system.
  Consult Documentation: Review SAP documentation or consult with your SAP Basis team for specific guidelines related to your system configuration.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance.
  Transport Management System (TMS): Familiarize yourself with the TMS configuration and how it handles namespaces and transport layers.
  Development Guidelines: Ensure that your development team follows best practices regarding namespaces and object creation to avoid such issues in the future.
  
  If the problem persists after trying the above solutions, it may be beneficial to engage with SAP support or your internal SAP Basis team for further assistance.