How To Fix TR447 - Transport layers must begin with 'Y' or 'Z' (customer namespace)

SAP Error Message - Details

• Message type: E = Error

• Message class: TR - Change and Transport System

• Message number: 447

• Message text: Transport layers must begin with 'Y' or 'Z' (customer namespace)

What causes this issue?

In your SAP System you can only define new transport layers that begin
with the letters <LS>Y</> or <LS>Z</> because the system is configured
customer system.

System Response

The function terminates.

How to fix this error?

For new transport layers, only choose names that begin with the letters
<LS>Y</> or <LS>Z</>.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message TR447 - Transport layers must begin with 'Y' or 'Z' (customer namespace) ?

  The SAP error message TR447 indicates that you are trying to transport an object that is not in the correct namespace. In SAP, customer-specific objects should be created in the customer namespace, which is typically defined by the letters 'Y' or 'Z'. This is a safeguard to ensure that customer developments do not interfere with standard SAP objects.
  Cause:
  The error occurs when:
  
  You attempt to transport an object that is not in the customer namespace (i.e., it starts with letters other than 'Y' or 'Z').
  You are trying to transport a standard SAP object or an object from a different namespace that is not allowed for customer modifications.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Object Namespace: Verify the namespace of the object you are trying to transport. Ensure that it starts with 'Y' or 'Z'.
  
  
  Create Objects in Customer Namespace: If you are developing new objects, make sure to create them in the customer namespace. You can do this by prefixing the object name with 'Y' or 'Z'.
  
  
  Transport Request: If the object is already created in the wrong namespace, you may need to:
  
  Create a new object in the correct namespace.
  Manually copy the content from the old object to the new object.
  Delete the old object if it is no longer needed.
  
  
  
  Check Transport Layer Settings: Ensure that the transport layer settings in your SAP system are correctly configured to allow for customer transports. You can check this in the Transport Management System (TMS).
  
  
  Consult Documentation: If you are unsure about the correct namespace or how to create objects, refer to SAP documentation or consult with your SAP Basis team.
  
  
  Related Information:
  
  Namespaces: In SAP, namespaces are used to differentiate between standard SAP objects and customer-specific objects. The standard namespace is reserved for SAP, while 'Y' and 'Z' are reserved for customer developments.
  Transport Management System (TMS): TMS is the tool used to manage transports in SAP. It allows you to configure transport routes, layers, and other settings.
  Development Guidelines: Follow SAP's development guidelines to ensure that your custom developments are compliant with best practices.
  
  By following these steps, you should be able to resolve the TR447 error and successfully transport your objects.