# APS Decision Tolerance in Supply Chain

The APS (Advanced Production Scheduler) decision tolerance setting enhances the supply chain order function as it is the combination of re-explosion setting 2, and the APP (Advanced Production Planner) tolerance setting that determines how the supply chain links act when a quantity changes. If the quantity change is greater than the percentage share, and the APP tolerance control is 0, then the APP decisions should be disregarded. That is, act as if the re-explosion setting would be 0 or 1.

0% means that no tolerance has been specified and current functionality is used. In other words, consider the APP planned proposal as a released order. This means that if the quantity decreases then no changes are made. If the quantity increases, then the APP planned proposal remains and a new proposal is created for the missing quantity.

For example, if 10% is specified then a quantity change greater than 10% deletes the APP proposal and creates a new proposal for the entire quantity (only if APP tolerance control is 0). If a quantity change is less than 10% then the quantity on the APP proposal is changed, but the decisions are kept.

Example

1. Order 100 pieces changed to 95 (-5%)
2. Order 100 pieces changed to 105 (+5%)
3. Order 100 pieces changed to 85 (-15%)
4. Order 100 pieces changed to 115 (+15%)

The following table shows an example of using APP tolerance control = 0:

Example (Tolerance control = 0) APP tolerance = 0% APP tolerance = 10%
1 Nothing, APP proposal left as is Change APP proposal to 95 but let decisions remain
2 APP proposal left as is + new proposal (5) Change APP proposal to 95 but let decisions remain
3 Nothing, APP proposal left as is Delete APP proposal, create new proposal (85)
4 APP proposal left as is + new proposal (15) Delete APP proposal, create new proposal (115)

The following table shows an example of using APP tolerance control = 1:

Example (Tolerance control = 1) APP tolerance = 0% APP tolerance = 10%
1 Nothing, APP proposal left as is Change APP proposal to 95 but let decisions remain
2 APP proposal left as is + new proposal (5) Change APP proposal to 105 but let decisions remain
3 Nothing, APP proposal left as is Nothing, APP proposal left as is
4 APP proposal left as is + new proposal (15) APP proposal left as it + new proposal (15)
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