Order status mismatch at SAP R3 & APO.

Hello,

We have some order with different status at R3 & APO, When we pushed orders form R3 to APO via CCR, getting below errors at CIF logs:

"Order could not be scheduled"

"An activity could not be scheduled/rescheduled"

We have MTO scenario, business create sales order at R3, after heuristic run, plan order created for sales order, business convert plan order to process order manually at APO.

We are using PDS for master data.

Kindly help us to resolve this.

Thanks,

Nilesh