How To Fix 0T002 - Transport layer &1 has an invalid name

0T002 - Overview

• Message type: E = Error

• Message class: 0T - WBO Configuration Editor / SE06

• Message number: 002

• Message text: Transport layer &1 has an invalid name

What causes this issue?

You entered a transport layer that does not start 'Y' or 'Z'.
In a customer namespace you can only create transport layers that start
with 'Y' and 'Z'. The only other transport layer you can use is 'SAP',
for defining the tranport routes for repairs to SAP objects.
Problems with transport layer namespaces occur only when SAP and
customer systems both exist in a transport domain, and you want to
transport changed objects from these systems automatically in transport
requests.

System Response

Your entry is rejected, or an error appears in the check log.

How to fix this error?

Enter a (custoner) namespace that starts with 'Y' or 'Z', or the layer
'SAP'. If the error appeared in the check log, check the following:
All systems with the standard transport layer <(>&<)>V1<(>&<)> must be
customer systems.
All source systems of transport routes with the transport layer
<(>&<)>V1<(>&<)> must also be customer systems.
If these conditions are met you can ignore the error.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

0T002 - Details

• The SAP error message "0T002 Transport layer &1 has an invalid name" typically indicates that there is an issue with the naming convention of a transport layer in the SAP system. This error can occur during transport management activities, such as when trying to create or modify transport layers.
  
  Cause:
  
  Invalid Naming Convention: The transport layer name does not conform to the required naming conventions set by SAP. For example, it may contain invalid characters or exceed the maximum length.
  
  Configuration Issues: There may be issues in the transport management configuration that lead to the recognition of the transport layer as invalid.
  Transport Layer Not Defined: The transport layer may not be defined in the system or may have been deleted or incorrectly configured.
  
  
  Solution:
  
  
  Check Naming Conventions: Ensure that the transport layer name follows the SAP naming conventions. Typically, transport layer names should:
  
  Be alphanumeric.
  Not contain special characters (e.g., spaces, punctuation).
  Be within the length limits (usually