SAP Message 56273 - Master cost center missing for PersNo &

Diagnosis
There is no master cost center for the above personnel number.

Procedure
Set up a master cost center in infotype 0001 (OrganizationalAssignment) for the personnel number.
As an alternative you have the option to create a travelexpenses-specific cost center in infotype 0017 (Travel Privileges) orin infotype 0027 (Cost Assignment, subtype 02).