BOM Explosion number

[rajesh_sutar2]

Hi Experts,Can anybody focun on What is BOM explosion number. WHY & where it is maintain.Is it mandetory for MRP run.

[Former Member · Accepted solution]

Hi,

BOM Explosion Number :

Use

If you do not use the assignment of a BOM explosion number, the order start date of the planned order is always used as the explosion date for the BOM. The system explodes the BOM that is valid on this date.

For multi-level BOM structures, larger time intervals may exist between the explosion dates of the individual assemblies. If BOMs (or alternative BOMs) have been changed in the meantime (for example, exchanging individual components due to new technical drawings, changed production techniques, due to parts to be discontinued etc.) a situation may exist whereby an assembly that is used repeatedly is produced with different BOM structures.

If you want to ensure that for a certain production unit, the BOM structure is always exploded with the same date, you can allocate a BOM explosion number to the planned order (or for make-to-order production it can be directly allocated to the sales order).

Prerequisites

You have created a BOM explosion number.

You have entered the BOM explosion number in the sales order, or entered it when creating the planned independent requirements or when manually creating/changing planned orders.

The system can automatically specify the BOM explosion number when entering planned independent requirements or customer independent requirements or when entering the sales order.

Features

By means of the BOM explosion number, you can define a common explosion date (fixed key date) for all BOM levels. BOM explosion is then carried out with this fixed key date for all levels.

Creating BOM Explosion Numbers

1.Starting from the MRP menu, choose Master data ® BOM explosion number ® Edit.

The system displays the initial screen for maintaining the BOM explosion number.

2.Choose .

The screen for maintaining the BOM explosion numbers now appears.

3.Choose New entries.

A screen now appears where you can enter new BOM explosion numbers.

4.Enter data as required.

BOM explosion number

The BOM explosion number is the object for which the following data is maintained. It can be entered alphanumerically.

Fixed key date

The fixed key date determines which bill of material is exploded.

Plant

You can also specify a BOM explosion number for a specific plant. Enter the appropriate plant in this case.

Material

You can specify a BOM explosion number for a specific material. Enter the appropriate material in this case.

Status

You can set the BOM explosion number to active or inactive using the status field. Only active BOM explosion numbers are used in the planning run.

5.Save your entries.

Changing BOM Explosion Numbers

...

1. In the menu, choose MRP ® Master Data ® BOM Explosion Number ® Edit.

The system displays the initial screen for maintaining the BOM explosion number.

2. If necessary, enter certain restrictions for the selection of existing BOM explosion numbers:

¡ If you want to maintain a specific BOM explosion number, enter it in the From BOM explosion number field. This BOM explosion number is then displayed first.

¡ If you want to maintain all the BOM explosion numbers for a specific interval, enter the appropriate BOM explosion numbers in the From BOM explosion number and To BOM explosion number fields.

¡ Enter the maximum number of BOM explosion numbers to be selected in the Maximum number for selection field.

¡ if you only want to maintain the BOM explosion numbers of a certain plant, enter the appropriate plant in the Plant field.

¡ If you only want to select the BOM explosion numbers of a specific material, enter this material in the Material field.

3. Choose (Execute).

The screen for maintaining the BOM explosion numbers now appears.

4. Select the BOM explosion number(s) that you want to change and choose (Continue).

The selected BOM explosion numbers are now made ready for input.

5. Change the corresponding data.

6. Save your entries.

Assigning a New Key to the BOM Explosion Number

Use

The BOM explosion number is transferred to the planned order of the finished product or of the main assembly during the planning run and copied to the planned orders for the main assemblies on all BOM levels when determining dependent requirements.

If you want an individual assembly within the BOM structure to be exploded with a different date, you can assign a new key to the BOM explosion number, that is, assign a different BOM explosion number to the main assembly.

This is also the case, when a main assembly is used in several BOMs and various BOM explosion numbers have been maintained for the higher levels. The new key assignment then determines that the main assembly is always produced with one standard BOM explosion number.

Procedure

1.Proceed as described in Changing BOM Explosion Numbers under points 1 to 3.

2.Select the BOM explosion numbers that you want to assign a new key to.

3.Choose Maintain new key assignment.

The screen for maintaining new key assignments now appears.

4.Enter the following data:

Plant for the material that you want to assign a new key to.

Material number for the material that you want to assign a new key to.

BOM explosion number, that is, the new BOM explosion number that the material should receive.

5.Choose .

The system displays the fixed key date, the short description of the reassigned BOM explosion number, and the short text of the material.

6.Save your entries.

Hope this helps.

Award points if useful.

Regards,

Tejas

[rajesh_sutar2 · Accepted solution]

Can anybody give suitable example which clear the role of BOM explosion number

[rupesh_brahmankar3 · Accepted solution]

Dear,

Example

If the order start date is 18/03/08 and the order finish date is quite a long period for ex 30/04/08. Assume that your material X has more number of levels.

Initial BOM explosion date is 18/03/08. and if you make any change in BOM after by 20/03/08, with immediate effective. If you convert plan order to prod order at some level on 25/03/08. The effect of BOM will come into picture. And new BOM will be exploded during that time.

If you donot want the Effect of new BOM . And you want to explode the same BOM of Validity 18/03/08. Then Create BOM explosion ( T- code MDSP) number and assign it in PIR T code MD 61 ( go to Schedule lines tab page and settings heading ) . The system will explode with fixed key date of 18/03/08 ( old BOM. ) Till that requirement is converted in to stock.

If you assign the BOM explosion number then at this date system explode the bom again and correct changed material will be copied to planned order or production order.

You have customizing setting also whether BOM will be exploded as per BOM explosion number or with order finish/order start date.

Hope this will clear your doubt

Regards,

R.Brahmankar

[rajesh_sutar2 · Accepted solution]

Dear Brahmankar,

Thanking you, you are great.

My problem is solve.

[Former Member · Accepted solution]

Thank you RB,

Very detail and useful.

BR,

Allen.

[rupesh_brahmankar3]

Dear,

By means of the BOM explosion number, you can define a common explosion date (fixed key date) for all BOM levels. BOM explosion is then carried out with this fixed key date for all levels.If you do not use the assignment of a BOM explosion number, the order start date of the planned order is always used as the explosion date for the BOM. The system explodes the BOM that is valid on this date.

You can create BOM explosion Number with Fixed Date or with out fixed date.

The BOM explosion number is transferred to the planned order of the finished product or of the main assembly during the planning run and copied to the planned orders for the main assemblies on all BOM levels when determining dependent requirements.

If you want an individual assembly within the BOM structure to be exploded with a different date, you can assign a new key to the BOM explosion number, that is, assign a different BOM explosion number to the main assembly

To create BOM explosion No., use tcode MDSP. assign it in PIR T. code MD 61 ( go to Schedule lines tab page and settings heading ) . The system will explode with fixed key. Till that requirement is converted in to stock

During MRP run system whether to select BOM explosion no. or not that we can define in two areas.

1. Plant parameter - OPPQ

2. MRP group - OPPR

MRP group is priority.

In MRP group BOM explosion no - select BOM explosion no/ order start date.

Please refer this link also,

[BOM Explosion number|https://forums.sdn.sap.com/click.jspa?searchID=17409010&messageID=3236562]

Regards,

R.Brahmankar

Edited by: R Brahmankar on Oct 14, 2008 12:24 PM