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To use demand classes, you assign a demand class when creating jobs, repetitive build schedules, sales orders, and master production schedules. ATP provides an option to check available to promise for a single demand class. Only supply and demand for the specified demand class is used in the ATP calculation. See: Demand Classes.

   To run ATP by demand class:

1. Define a demand class ATP rule. See: Defining ATP Rules.

Create your demand class rule using the ATP Rules window. Turn on the ATP by Demand Class option.

Attention: For demand class ATP rules, the Supply Source Options do not include available on-hand, purchase orders, supplier requisitions, inter-organization transfers, and internal requisitions.

2. Specify a Demand Class in the ATP Information window. See: Viewing ATP Information.

Specify your ATP criteria with a demand class ATP rule. If you specify an ATP rule that is not set up for demand class ATP, the demand class is ignored, and all supply and demand sources specified by the ATP rule are used to determine ATP.

See Also