Good morning everyone,
I am facing an error trying to post consumption after doing a production pick.

This is the error that I've faced. It says to amend the document number, however, that field is fixed. Under manufacturing setup I have also turned on the field "Doc. No. Is Prod. Order No."
As you can see I am on manual flushing and have managed to pick from my bin.

Is there a setup that I'm missing or is my process wrong?
This is my location setup:


(Bin setup)
More context:
I am trying to setup a single location of a a warehouse for a food company, so essentially the material flow would be:
1. Purchase order receiving at Bin "RCV"
2. Put away of p.o items at Bin "Raw 1" for raw materials
3. Create production order and pick from Bin "Raw 1"
4. Putaway production order to Bin "Fin1" for finished goods.
5. Create assembly order and pick from Bin "Fin1"
6. Put away assembled items at Bin "Assembly"
7. Time to fulfil sales order, and pick from "Assembly" Bin
So far managed to done till step3. until i faced that document error
Would really appreciate the help. Thank you so much.
Best regards,
ZJ