Hello,
I am trying to run CTP delivery date control against a product with a multi-level BoM. The calculations seem to ignore component availability of lower levels (sub-assemblies, purchase parts), hence the result is inaccurate. So, my question is - does CTP give an accurate result with multi-level products?
I want to be able to identify the critical components. It looks like the system does explode the product through all levels, but somehow it overlooks existing surplus stock and creates unnecessary planned orders. I think that all items are set to CTP-control (Released Products - Plan - Default Order Settings), as per attached.
Delivery Date Control = CTP on Sales Ledger parameters - Shipments. Other ATP fields are set to zero, not relevant I think, as per attached.
Are there any key settings that I should check? We aren’t running finite capacity or finite material.
Many thanks.
How is the dymanic plan configured?
What are the coverage group settings of the item?
It should take into account the inventory - assuming the stock is available of course.
I attach an updated document with some screenshots. My test parts had no defined Coverage Group, so I think that they default to the Group one.
Many thanks.
DUG_CTP query1.pdf (227 KB)
I assume the dynamic plan is then selected in the MP parameters?
However the first thing I would do is change the negative days on the group coverage group to zero, because this setting means the system will always suggest a planned order, which is your issue I guess!
I think that the negative days are already set to zero - am I looking at the wrong field?!
Updated attachment includes MP parameters.
Many thanks.
DUG_CTP query2.pdf (243 KB)
Sorry, change it FROM zero, make it 200 and then re-run.
You should separate your static and master in the parameters as well as you have separate ones.
Thanks - I will run some tests.
Our intention was to only run the Dynamic plan, hence the parameters, but it does look a bit odd. Is it Ok to leave it unchanged at the moment?
Yes it should be fine to leave it as it is, it is just that you will never have a static position to plan from, when anyone does anything like you are doing it moves the goalposts of the dynamic plan.
The negative days may not alter the suggestion based upon the supply-demand chain, but it is a starting point. After that validate the warehouse on the active BOM to ensure you have an alignment of stock and demand. Then perhaps post an example 
Have fun.
Thanks, I have run some simple scenarios and they do work, excellent. I’ll test some more complex examples, and then I’ll post an example with the key steps.
Thanks again.