What must you do for classic MRP to automatically create schedule lines in case of material shortage?

For classic Material Requirements Planning (MRP) to automatically create schedule lines in the event of a material shortage, it is essential to set the creation indicator for delivery schedule lines on the initial screen of the MRP run. This setting ensures that the system understands the requirement to generate schedule lines based on the planning parameters configured for the materials in question.

When this creation indicator is activated, the MRP process is informed that, in cases of shortage, it should create delivery schedules that reflect the anticipated needs for the materials. This is vital for maintaining effective inventory levels and ensuring that purchasing and supplier management efforts align with production demands.

The correct choice focuses on the automatic handling of materials shortages, which is a primary function of MRP systems. It facilitates streamlined communication with suppliers and helps maintain a steady flow of materials needed for production.