Collection strategy field not appearing at the time of CA creation

Hi Experts,

At the time of creating CA I was not able to see the Collection strategy(FKKVKP-STRAT) field.

So, I went to TCode CAS2 and found in detailed view of Field group 128 - Collectios "Exclude Customising" was checked. I unchecked the "Exclude Customising" and checked "Changes Plannable"and saved. I got a warning "Dont change SAP entry" but I continued.

I can now see Collections entry in  config step "Configure Field Attributes for Contract Account Category" and made it required field. Still the fileld is not appearing when I create a CA in the category.

Please let me know what config step I am missing ?

Thanks & Regards

Satyajeet