SAP Note 17041 - Availability check is not performed

Symptom:

The full quantity of a material is confirmed on the requested delivery date, although the ATP quantity is zero and the availability check is active.

Solution
Please check whether the replenishment time is checked. (Transaction OVZ9)

If so, one of the following times must be maintained in the material master record:

o Goods receipt processing time (purchasing view)
o Planned delivery time (MRP view 1)
o Goods receipt processing time (MRP view 2)