OH not populating at CK11

Hi

I am not able to populate the Overhead Costs on the Cost Estimate at the time of performing CK11n

I have created my Costing Sheet, for Labour OH , General Cost OH, Material Cost OH and Embroidery OH

i have assigned CE with CE Category 41 as the Credit and CECateogry 43 as the base {which is in turn assigned to the Activity Type}

And in OKTZ - i have assigned the CE with Catergory 41

Am i missing something - can anyone please guide me as to how to get the OH to populate at the time of generating the CK11n transaction

Thank u

rukshana