MRP collective requirements PR creation issue

[jellenijholt]

Hello,

i run into a problem with the PR creation during MRP runs.

For Procurement type F (external procurement) materials we have set the lot sizing procedure on MB (Monthly lot size). The depentent requirements indicator is set on 2 (collective requirements only), both in the Material master and the BoM items.

When i do a MRP run, i would now expect the system to create 1 PR per month period to cover the entire requirement for that period. However, not 1 PR but multiple PR´s are created to cover the requirement, all to be delivered on the same day. Almost always the PR´s have a quantity equal to the minimum lot size that is set for the material. A maximum lot size has not been set, so that cannot cause the issue.

Could anyone suggest to me what could trigger the system to still create multiple PR´s, instead of just 1 per delivery day?

Thank you and kind regards!

Jelle

screenshot-md04.png

screenshot-2-md04.png

screenshot-3-md04.png

[rupesh_brahmankar3]

Hello,

Could you please share the screen shot of MD04?

Also check the lot size configuration in OMI4 for your lot size MB check these following settings,

• Lot-sizing procedure P Period lot-sizing procedure
• No. of periods 1
• Lot-size indicator M Monthly lot size

Best Regards,

R.Brahmankar

[jellenijholt]

Hi,

Thanks for your fast reply! I have already checked the configuration in OMI4 and it is correct.

See the screenshots now attached in the original message. This is one example, but it occurs at all materials. It is from a Q-system where currently testing procedures are being performed, so there are still numerous order reservations for the material with dates in the past. Could this have something to do with the cause of the problem?

Kind regards

Jelle Nijholt

[rupesh_brahmankar3]

Hello,

I do not see any issue, system haven't created multiple purchase requisitions for each order reservation.

You have order reservations for the material with dates in the past, however it has nothing to do with MB lot size.

With the MB lot size system will create 1 Preqs for all these reservation which falls in 1 month period.

However, system will create order reservation as per your production/process order.

If you want to close old past dated reservation then you may need to close/TECO the old production/process orders.

Best Regards,

R.Brahmankar