minus values in BOM

[Former Member]

Hi All!

Have a problem, to be resolved!

I am during SAP PP set up for a new business. I need to manage mandrels availability in planning. My idea was to, create an item index for mandrels, then add mandrel in first routing step, and then release (add with minus) in last routing step.

I can add minus BOM value, but during confirming production steps, there are errors, and the solution does not work. Item was added to BOM with L indicator, because I want to see how it looks in md04, and I want SAP to check availability of mandrel in planned time.

Maybe U can help me, how to resolve problem!

Thanks in advance!

[Former Member]

Hi guys!

Thank U for advices. Will follow them ASAP. Now I got time only to show U the error:

Account determination for entry XXXXXXXXXXXXXXXXXXXXXXXXX not possible

So in my opinion SAP is telling me that it could not book minus value in account. Maybe it is connected with valuation class settings.

Will try to set up material with zero value, and retry whole procedure. Maybe it will work.

Will let U know as soon as I will manage to do this … today whole day of meetings!

Have nice weekend!

[Former Member]

Hello Fryczak,

This error is because corresponding OBYC settings for automatic postings haven't been maintained. Postings are made to G/L accounts automatically in the case of Inventory Management & Invoice Verification transactions relevant to Financial and Cost Accounting.

At the time of confirmation probably system is trying for GRN of your mandrel material (which is termed as a by-product with negative sign) & doesn't find corresponding G/L account in OBYC.

This error can be resolved by you by accessing OBYC T code but I would recommend you to consult your FICO consultant to get it resolved. He will assign the proper & required G/L account there.

Beside this I shall also advise you to go for standard process of PRT to map your requirement in case you don't need to check availability of your PRT materials in MRP run.

Mangesh S

[former_member184655]

Dear Marcin,

I guess you want to know the life of a mandrel during production order execution.

In my understanding this mandrel can be created either as a Material PRT /equipment PRT and assign

it to the operation in the routing where it is required and not in the BOM.

Also the life of PRT/PRT availability is not taken into account during Materials planning.

Check if this link can help you,

http://sap-pphelp.blogspot.com/2009/12/calculating-usage-for-prt.html

Regards

Mangalraj.S

[former_member209265]

Hi,

Item cat L allows positive and negative values. Generally negative we put for co product and by product.

It will be helpful if you share the BOM screen shot and error details.

As well availability check is possible in the level of planned order. You have to set the customizing.

Will wait for your reply.

Regards,

Krishnendu.

[Caetano]

Hi Fryczak

You have mentioned that there are errors during the confirmation, however, you did not specify which kind of error. Can you please copy the error messages here?

BR

Caetano