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Question

how to get purchase proposal by MRP?

  • May 21, 2026
  • 3 replies
  • 35 views

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We use IFS8. We want run MRP to get raw material purchase proposal. The data is based on openning CO, PO, MR, Shop order,  on hand quantity and BOM.  Just think about quantity, don’t mind time and lead time.

What shold prepare first?

wihch functions should I run in sequence? 

Could you give me some instruction? Let me get a start.

Thanks in advance!

3 replies

Rasika Lakmal
Superhero (Customer)
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  • Superhero (Customer)
  • May 21, 2026

To start using MRP in IFS8 for generating raw material purchase proposals, you first need to decide which planning method you want to use for your inventory parts (for example, Planning Method A or G).

After that, you should prepare the following master data:

  • Inventory parts and planning parameters
  • BOM structures for manufactured parts
  • On-hand inventory quantities
  • Open Customer Orders (CO)
  • Open Purchase Orders (PO)
  • Material Requisitions (MR)
  • Shop Orders
  • Safety Stock levels for each SKU (IFS can also help calculate Safety Stock if required)

Even if you are not considering lead times initially, it is still good practice to review planning and manufacturing lead times later for more accurate MRP results.

Before running MRP, also review any overdue demands or supply orders, as these can affect the proposal quantities.

Typical process sequence:

  1. Setup planning methods and inventory planning parameters
  2. Define/update BOM structures
  3. Review inventory balances and open supply/demand
  4. Set Safety Stock values
  5. Run MRP
  6. Review generated Purchase Requisitions (PRs)
  7. Convert PRs to Purchase Orders (POs)

This should give you a good starting point for generating raw material purchase proposals through MRP.


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  • Author
  • Sidekick
  • May 22, 2026

To start using MRP in IFS8 for generating raw material purchase proposals, you first need to decide which planning method you want to use for your inventory parts (for example, Planning Method A or G).

After that, you should prepare the following master data:

  • Inventory parts and planning parameters
  • BOM structures for manufactured parts
  • On-hand inventory quantities
  • Open Customer Orders (CO)
  • Open Purchase Orders (PO)
  • Material Requisitions (MR)
  • Shop Orders
  • Safety Stock levels for each SKU (IFS can also help calculate Safety Stock if required)

Even if you are not considering lead times initially, it is still good practice to review planning and manufacturing lead times later for more accurate MRP results.

Before running MRP, also review any overdue demands or supply orders, as these can affect the proposal quantities.

Typical process sequence:

  1. Setup planning methods and inventory planning parameters
  2. Define/update BOM structures
  3. Review inventory balances and open supply/demand
  4. Set Safety Stock values
  5. Run MRP
  6. Review generated Purchase Requisitions (PRs)
  7. Convert PRs to Purchase Orders (POs)

This should give you a good starting point for generating raw material purchase proposals through MRP.

Thanks for your quick answer first! I will try do some test follow your instruction.

Yesterday I tried run MRP program (Perform Site MRP) .  I check background job. It failed. Error message as follow.

 

Question 1 : What is the problem? How to try fix it?

Question 2 : There are thounds of spare parts. It is not needed involve MRP calculation. How can I  exclued it from MRP? Change their planning method form A to ohters? Or other good/fast option? 


Forum|alt.badge.img+10
  • Author
  • Sidekick
  • May 22, 2026

To start using MRP in IFS8 for generating raw material purchase proposals, you first need to decide which planning method you want to use for your inventory parts (for example, Planning Method A or G).

After that, you should prepare the following master data:

  • Inventory parts and planning parameters
  • BOM structures for manufactured parts
  • On-hand inventory quantities
  • Open Customer Orders (CO)
  • Open Purchase Orders (PO)
  • Material Requisitions (MR)
  • Shop Orders
  • Safety Stock levels for each SKU (IFS can also help calculate Safety Stock if required)

Even if you are not considering lead times initially, it is still good practice to review planning and manufacturing lead times later for more accurate MRP results.

Before running MRP, also review any overdue demands or supply orders, as these can affect the proposal quantities.

Typical process sequence:

  1. Setup planning methods and inventory planning parameters
  2. Define/update BOM structures
  3. Review inventory balances and open supply/demand
  4. Set Safety Stock values
  5. Run MRP
  6. Review generated Purchase Requisitions (PRs)
  7. Convert PRs to Purchase Orders (POs)

This should give you a good starting point for generating raw material purchase proposals through MRP.

Forget question 3: If it possible to exclude Work Order from MRP calculation?