To update your Planned Unit Cost on a Works Order please do the following:
Click Production
Click Works Order Enquiry
Search for your Works Order number
Click View Components
Click on the 'Details' radio button
There will be a column with a orange header, by default it will read 'Associated Reject Number'. Click this header and select 'Planned Unit Cost'
Press Ctrl + M to enter modify mode. You MUST be in modify mode before moving onto the next step.
Press F5 on the unit cost which needs updating
If the Current Standard Cost price is £0.00 this means that the Standard Cost field is empty and will need to be inputted.
If there is a price, click Update Planned Cost and click Close
The planned cost price will now be updated.
