Issue with the field COBRB-KONTY?

Hi All,

I have a requirement to create settlement rule for the cost center with values ,

COBRB-KONTY = CTR.

COBRB-PROZS = 100.

COBRB-EXTNR  = 1.

COBRB-PERBZ  = PER.

Here i am facing issue with the field KONTY. It is having length CHAR2 in database level.

But i have to pass the CTR value having 3 characters in length .

Anyway screen field is COBRB-KONTY only , taking only two characters 'CT'.

I have discussed with functional owner regarding this, and he suggested to check with table TO0B1.

In that table i can see the field OBART_LD having these object type values like CTR , WBS and so on.

Now, How can i use the field TO0B1-OBART_LD in my requirement to update the field COBRB-KONTY.?

Please help me.

Thanks

Siva