I create QA for internal 70% and external procurement 30%. Max lot size in product master is 500 for lot sizing EX and procurement type X.
When I enter a demand for 100, the system create a purchase req for 30 but instead of creating one snp plannned order, it is creating two as follows:
70% of remaining 70 = 49 and the rest (70-49) = 21 both using the same PPM 1. I think the system is coming to PPM source of supply and first reads 70% quota against it then does the above calc.
My expectation is 30 for external and one order for 70 for inhouse.
If I remove the max lot size I get the expected result.
But this does not sound logical.
external proc: 30%
inhouse production: 70% PPM 1
for a demand qty of 600, i get a preq for 180 but the remaining 420 is again split as 350 and 70 for the same start finish dates and the PPM 1.
Here is the 'original scenario'.
I am trying to model make/buy using Heuristic. I can produced a max of 500 per week, above that I want to auto-generate a PR on a vendor.
If you know of a most efficient method to accomplish this using background processing with least subsequent interaction, please let me know.