Plan Materials at Operation Start

This field applies to MRP and APS.

When the system is planning released jobs and production schedule releases, this field controls whether the materials for a job or production schedule release are required to be available at the operation's start date or at the job/PS release start date.

• Select this field to plan the materials to be due at the start of the operation in which the materials are used. This method of planning results in a just-in-time material plan. In most cases (especially if you are using APS), you should select this field.
• Clear this field to plan the materials to be due at the start of the job/production schedule. Typically, you should clear this field only if these conditions are true:
  • you want to have all materials ready before you release the job or PS release
  • all of the materials are not specified on the first operation in the routing.