Discontinued material MRP4 + MRP run

[toniolie]

Hello guys!

I'm facing a situation here, when I try to run MRP for an item that's discontinued.

Example: I have item X and Y. X is discontinued and Y is its substitute. I informed in MRP4 of X the subsequence with the date in the past, also the type of subesequence is "single".

Item X has a reorder point of 10 units and has 6 pieces on stock. Considering that, if I ran MRP for this item, system would create a PR of 4 pieces. Since I informed the discontinuation in MRP4, I would imagine that this demand would pass by this item and be created for Y item, the one that is substituting X. But the system did not do that.

I ran MD03 with the respective numbers: 2 - 3 - 1 - 3 - 2

Do you have any idea of what might be happening?

Thank you in advance.

Regards,

Estevão.

[Former Member · Accepted solution]

Estevão,

??? Demand is not considered in Reorder Point planning, there is no demand for 'X' to pass to 'Y'.  Discontinuation only works on MRP type parts. Your planning run will not generate a PR for Y until Y onhand stock falls below reorder point.

If you want to use discontinuation, select an MRP type of P* or M*.

Best Regards,

DB49

[Caetano · Accepted solution]

Hello Estevão

The restriction mentioned by DB regarding the MRP type can be found on SAP help on the following link:

http://help.sap.com/erp2005_ehp_06/helpdata/en/f4/7d2bd444af11d182b40000e829fbfe/content.htm

See the relevant information from the help below:

Both the part to be discontinued and the follow-up part must be MRP parts.
The base unit of measure of the follow-up part must correspond to the base unit of measure of the part to be discontinued
Both the part to be discontinued and the follow-up part must be either a stock item or a variable-sized item in the bill of materials
The follow-up part is not a phantom assembly.

Please also read the following consulting note for a general description of the discontinuation on MRP and some frequently asked questions:

43636 Discontinued parts

BR

Caetano

[toniolie · Accepted solution]

Hello, thanks for the reply of both of you.

~~ This subsequence applies for spare parts plant and not for a production plant, so these items aren't in any BOMs ~~

*forgot to mention that previously

I wasn't aware of how MRP4 works, I believe that all demands for the obsolete item would be generated for the subsequent one, disregarding any other configuration.

I've made a quick research on Internet and found out that I could use mrp type PD for it. I changed MRP Type in both items, old and new one, and I ran MRP. Nothing happened, it did not create a demand for the subsequent item.

What I question you is "which other fields/configurations should I take in consideration when using MRP type PD for discontinuation"?

Please, consider that we do not use the standard MRP types of SAP.

Thank you,

Estevão.

[Caetano · Accepted solution]

Hello Estevão

The settings on MRP4 should be enough to set a simple discontinuation for a material.

If you don't have a demand for this item, there is nothing to redirected. Also, I suggest you to take a look on the already refered note 43636.

Also, system will generally redirect only dependent requirements and reservations (production order reservations by the ATP check, not by MRP). Some requirements, such as PIRs, forecast or subcontracting requirements are not redirected, as it is stated on the note.

This note provides more details about the general issues and restriction of discontinuation.

BR

Caetano