ATP Check at the time of creation of Opportunity.

Dear Friends,

We have a business requirement in which we are supposed to perform the ATP check @opportunity level. When we are trying to assign the ATP Profile to the Item Category OPPT, the ATP profile is not available for opportunity. there is a FM "CRM_ITEM_TYPE_FIELDCHECK_CB" which is responsible for hiding the   ATP Profile field for opportunity "OPPT" Line Item.

I have update the ATP Profile for opportunity in the Maintenance View "CRMV_ITEM_TYPE"

I have implemented the 2 Badi's also CRM_ATP_EXTERN_BADI & CRM_ATP_EX_POST_BADI but none of the implementation is being getting called in case of opportunity.

But when i am creating Quotation the above BADI's are being getting called.

And moreover, the Availability Check for ATP in customization there is no RFC system maintained neither the Control Information.

But I am confused, why in case of Quotation the BADI's are getting Triggered and why not in Case of Opportunity.

Please Advise me on the above and if I am missing something or if there is any alternative for ATP at OPPT level.

Your answer will be rewarded

Thanks in Advance,

Kind Regards,

Ashraf.