MRP with subcontractor stock

[Former Member]

Hi SAP Experts,

I have a question about MRP.

Can we work MRP with subcontractor stock?

Let me explain, the MRP could not to generate new planning orders if I have subcontractor stock. For example:

In MD04 transaction

MtlRes 100- units

MtlRes 100- units

MtlRes 100- units

SubcSt 300 units

If I have this situation, the MRP run could not to generate planning orders because the subcontractor stock recover the quantity.

This problem (almost) drive me crazy. I really appreciate any help.

Thanks in advance.

[Former Member · Accepted solution]

Dear Demetrio

Please note that the logic for subcontracting was changed as of release

4.0A.

As of release 4.0 the net requirements calculation for components to be

provided in subcontracting takes into account that the provision stock

can only be used to cover the corresponding requirement of material

provided. The provision stock that is already available from a

subcontractor (vendor) can only therefore be used to cover the

requirements of material provided at this subcontractor.

The system uses only the stock that has not been assigned to a

subcontractor as unrestricted-use stock to cover all requirements.

For further information about this issue please consider the below QA. With the modification of note 170597 the old logic can be achieved. Please notice that it is a modification note.

1. Question

Why does the MD04/MD05 display an own segment for subcontracting as of Release 4.0B and how does the materials planning work with this new logic?

Answer

The logic regarding the subcontracting was changed as of 4.0. This is explained in detail in the release notes for 4.0A:Planning of the components to be provided for subcontracting

Material Requirements Planning -> Planning Execution -> Material Requirements Planning: Planning of the components to be provided for subcontracting

2. Question

Why does the third-party order processing for subcontracting work differently as of Release 4.0B?

Answer

The (Pseudo) Third-Party Order Processing for parts provided together with the own segment for subcontracting results in problems and can result in inconsistencies. This is described in detail in Note 214298.

As of Release 4.5A you can implement the third-party order processing with subcontracting MRP areas (refer to the corresponding documentation).In addition you can use a modification to reset the system to the behavior before 4.0A, refer to Note 388479. As of Release 4.7, BAdI 'MD_SUBCONT_LOGIC' allows this without a modification.

3. Question

Why does the discontinued part for subcontracting not work?

Answer

You cannot divert requirements of material provided to the follow-up material. The reasons are described in detail in Note 43636, section 6.

4. Question

Why does the system not display the requirements of material provided in the storage location MRP area, as expected?

Answer

Requirements of material provided (subcontracting requirements, material staging requirements) never reach a storage location MRP area, because later you cannot post the withdrawal from this MRP area.

The withdrawal of the components (to be provided) during the goods receipt for an SC procurement proposal occurs always from the stock with subcontractor, which is managed - from the viewpoint of the inventory management - on plant level and has no storage location reference.Refer to Note 503497 for details.

5. Question

Why does a requirement move from the subcontractor segment into the plant segment and is covered there although it appears already to be covered in the subcontractor operation segment by a receipt element (Pseudo third-party order processing for the subcontractor)?

Answer

The corresponding receipt element must standardly always be within the rescheduling horizon. This is required (due to technical reasons) even then when the input itself does not have to be rescheduled, so that the net invoice can deliver consistent results for the subcontractor segment together with the rescheduling check.

If the receipt element occurs after the requirements date, the corresponding element must participate in the rescheduling check (Transaction OMDW).

Regards

Soundar

[Former Member]

Thank you.

[Former Member]

Hi,

You would have maintained the subcontractor as a storage location.

In storage location customising or in MRP4 you can exclude the storage location stock from MRP. So during MRP subcontractors stock will not be considered

IF helpful reward your points

Regards

Ranga

[former_member184655]

Hi Mr.Ranaganathan could you please tell me in MRP4 view for a material,where is this option so that i can exclude or include the storage location stock from MRP?

Thanks & Regards

Raj

[former_member196398]

Karthikraj,

Please create new question thread for new questions.

Regards,

Prasobh

[former_member184627]

Hi,

1.Try the options given in BOM as material provided by vendor/ matlr provided by customer.

2.In the availablity check options in the spro img, check the indicator w/o subcontractor stock.

T.code opjk/opjj

Regards,

SDS

[former_member184655]

Hi Mr.Senthilkumar,

Could you please tell me which T code i should indicate the material is provided by vendor/material provided by customer?In CS01wher's this option?

Please help me

Thanks & regards

Raj

[Former Member]

hi,

mrp areas enable u to plan materials,which are required in different production areas,storage locations or subcontractor separetely from each other.to activate mrp for mrp areas(img-- activate mrp for mrp areas) tcode --OM0F.

create mrp areas(define mrp areas)

create mrp area segment in material master(mrp1 view)

in your case check your settings for subcontracor area.

award points if useful.

Regards,

N.Ramesh