I have used GATP and implemented Material susbtitutions.
Now i am looking to achieve the following in ECC:
1) During ATP check, ECC should first look for availability on the material in the sales order item
2) If enough supply is not found(ATP Check fails), then system should substitute this material with another material; this substitution should happen only if the ATP check on the customer ordered material fails;
Is ECC capable of doing this? I already tried Material determiantion and all reason codes; But material determination is directly replacing the customer ordered material with the substituted material even though there is enough stock on the sales order material.