MIRA: Reference doc. cat. "transportation service provider" not supported

What causes this issue?

The reference document category "Transportation service agent" is not
yet supported in transaction MIRA.

How to fix this error?

Use transaction MIRO for this reference document category.
Before you call transaction MIRA again, you must set the reference
document type to any other value (not "Transportation service agent")
in transaction MIRO. Choose ENTER.

Procedure for System Administrators

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.