All our inventory is project specific and planning is accordingly done via project MRP. The ‘run project MRP’ functionality does not have the option to plan with alternate components (where MRP does). In the following topic there is mentioned due to which reasons IFS has made this choice:

'Plan alternate component' in PMRP | IFS Community

In case of an engineering change we would like to use up the left-over stock of the ‘phased out’ part before switching to the new ‘phased in’ part. Are there system settings or is there a way of working which can be used to simulate the ‘plan with alternate component’ functionality? Where:

• The ‘phased out’ part’s stock is used up before switching to the ‘phased in’ part
• The ‘phased in’ part is ordered in time
• The alternative can still be used in case multiple engineering changes are in place