Availability Check at sub component level

[former_member182585]

Hi SD Gurus,

I have a issue on arriving at material availability date in sales order by checking the availability of sub components. The details of this issue are given below.

Take the example where we have a:-

Casting with a purchasing lead time of 40 days

Machined component made from that casting with a machining lead time of 10 days

Assembly using that machined part with an assembly lead time if 1 day

Assuming that there are no castings or machined parts available then the total lead time for that assembly is 40101 = 51 days

If castings are available then lead time is 10+1 = 11 days etc.

ASSY A contains, (Manufactured Material with BOM & Route)

PART B and is made from, (Manufactured Material with BOM & Route)

CASTING C (Factored Product)

Our SAP does not accumulate these lead times to give a product lead time when a Sales Order is added, instead it only gives the lead time on the part on the Sales order u2013 in this case 1 day.(Material Availability date)

Hope this explains the problem.

Regards

Vinod Y

[madlercm · Accepted solution]

Hi Vinod,

For the issue that you bring here, SAP has a few alternative solutions:

1) Use a more sofisticated ATP functionality with APO/GATP; there you can do multilevel ATP.

2) If you can't do that, the best you can get for multilevel ATP in ERP is in a assembly to order scenario, where the system creates a production order during sales order creation, and is able to check ATP for the (1 level down only!) BOM components + the production LT to come up with a more realistic ATP for the sales order. Take note that in this scenario ASSY A is never manufactured to stock before an order arrives!

3) Use the replenishment lead time concept at ASSY A level. This is a nice workaround for the issue on hand. The system checks ATP at ASSY A level, and if there is no availability, sets an ATP date in the future as per the Total Replenishment Lead Time that you defined. This LT normally is based on an "empty stack" stock situation, so it is like the worst case. Then, if the stack is not really empty, you can just do better.

Regards,

Mario