Cost Center Hierarchy does not exist in SETHEADER

Dear CO Experts,

I have recently come across the following scenario

System: 4.6C

in a controlling area, in table TKA01, the Cost center hierarchy is assigned.

when I query table SETHEADER, looking for a set in class 0101 for the related hierarchy in table TKA01, I cannot retrieve any data.

Has anyone come across such situation, before?

Thanks in advance for all the inputs.

Kind Regards,

Fabrizio Figus