Dear experts,
we are setting up a new flow to ease the process of using onsite contractors and at the same time improve control.
In this concept:
- Each supplier will have a maint. work center
- Planners create maintenance orders for each supplier, with internal operations for this work center
- Job tickets are mailed instead of PO, signed off copies are given back to the planner who will create the confirmation.
- To pay supplier, we will use negotiated tariff rates to calculate the costs and distribute them towards the machine cost centers
- At month end, totals are invoiced and paid against a bulk purchase order on responsible cost center
So far so good. But we also have cases where next to hours, material costs are present.
Using separate external operations - separate PO etc. is not desired.
We know that we could use a 1 min = 1 EUR tariff and create 100 minutes work if we need to allocate 100 EUR.
But we cannot take operations with a proper unit via the above process.
Has anybody encountered this challenge and might share how it got solved?
Thanks in advance for helpful answers or solutions 
Regards
Merten