CTM Aggregation

[Former Member]

Hi ,

We have a problem with CTM. Let's say we have a product A and this product is made up of B (a raw material which is purchased). We have done setting in which stock of B is a constraint ; based on this stock of B production will be triggered and no new receipt elemenst will get generated for B.

1 B is needed for 1 A. We have 5 demands for A, each of them is 100 PC. When we run CTM, it creates 5 planned orders for A, each of them is 100 PC.

And for each planned order, it creates 5 Dependent Demands for material B, each of them is 100 PC and 5 different purchase requsitions, each of them

100 PC, for each dependent demand. That is ok. But we want CTM to create only one "Aggregated" purchase order

for material B. If we think of the above example, we want a 500 PC purchase order.

But we are not succeded in performing this aggregation.

Does anyone know anyway to aggregate these receipts (Purchas requsitions)?

[Former Member · Accepted solution]

You can achieve the aggregation of demand elements by ATP check group'daily requirements' ( @ component)or Period profile on demand tab page(not sure of this but you can have a look at planning matrix RPM).

And also if you have min & max lot size restrictions on the PIR, you can have these maintained on the lotsize tab and planning run will give the Preq accordingly.

Regards,

Deepthi

[Former Member]

Answered

[Former Member]

Hello Anjali

As per my understanding of your requirement,You would require a single Purchase order for a set of PR's which gets generated.

My suggestion : When the PR's are published to R/3, you can aggreate all the PR's into a single PO. The PR's to PO coversion can be possible using ME5A T - code.

Regards

Nav

[Former Member]

Hi Anjali - to add to Srinivas valid observations, you can use the aggregation functionality to address the issue IF you are content with aggregation based on the time stream.

Steps are:

1. Delete the existing PR's from the factory location.

2. Set up a CTM profile to aggregate your dependant demand category (AV/AY) and ensure the location selected is only the factory location.

3. You should see upon executing the planning run a single purch req for a week/month depending on your time stream.

Regards

Vinod

[srinivas_krishnamoorthy]

Anjali - CTM is an order by order planning tool. This means it has to create supplies for one demand all the way in the network before going onto the next demand. This automatically means that you would end up with 5 dependent demands. This is default and expected CTM behaviour. Can you influence this behaviour ? Yes and No. Yes, through increased lot size limits, however this is not an acceptable solution to the business always. No, because CTM does order by order planning.

Are there ways around it ? - yes, through development. Have after-CTM order consolidation scripts that look at orders with same data and time on a product. This script will get rid of orders and create one consolidated order based on sum of all quantities. The way to write this script would be to leverage BAPIs to delete and recreate these orders. I dont think there is any other way.