Freeze estimated order-costs
You can freeze the estimated end-item unit costs to enable a good comparison between actual and estimated unit costs. The moment of freezing estimated costs is determined by the Moment Freezing Estimates check box in the Production Order (tisfc0101s000) session.
After you freeze the estimated end-item unit costs you cannot change:
- The estimated materials
- The estimated hours
You can change the following according to the latest schedule changes:
- The materials to be issued
- The production planning
- The materials to be issued
If you freeze the estimated costs, and if changes are made to one of the following:
- The production planning
- The materials to be issued
Then the change does not influence:
- The estimated materials
- The estimated hours
In production planning changes can occur in:
- The scrap and yield percentages
- Ordered quantity
When a change occur after freezing in the scrap & yield percentage, LN adjusts the planning of:
- Following operations
- The number of materials in the Material to Issue for Production Orders (ticst0101m100) session
If after freezing, changes are made to the ordered quantity in the production order, LN adjusts (taking Scrap & Yield factors into account) the:
- Estimated materials and estimated hours
- Estimated order costs
- Material and capacity allocations
Example
A production order has the following data.
Quantity ordered = 100 pcs
| Operation | Yield | Scrap | QTY planned input | QTY planned output |
|---|---|---|---|---|
| 10 | 100% | 2 pcs | 127 | 125 |
| 20 | 80% | 0 pcs | 125 | 100 |
Assume the estimates are frozen. When changing the Yield from 80% to 50% on operation 20, the allocations of materials are updated based on the new quantities. The estimated quantity is still related to resp. 127 and 125 pieces respectively.
The new situation is as follows:
| QTY planned input | QTY planned output | |
|---|---|---|
| 10 | 202 | 200 |
| 20 | 200 | 100 |
When changing QTY ordered from 100 pieces to 150 pieces the estimated costs and the planning change again. The new situation is:
| QTY planned input | QTY planned output | |
|---|---|---|
| 10 | 302 | 300 |
| 20 | 300 | 150 |
The estimated material costs are based on the estimated yield of 80%, which results in the quantities 187,5 and 189,5 pieces.