MRP strange behavior

[Former Member]

We are running MRP with 3 different MRP types: V1, PD, ND on the Material Master.

Since our schedule lines only allow u201CCNu201D category, I updated the combinations for sales item document, MRP type and Schedule Line on transaction VOV5:

TAN V1 CN

TAN PD CN

The problem its that after I enter these values, the material availability does not get done (any quantity gets confirmed for shipment) and if I delete them it gets the ATP check done as it should but sometimes releases some schedule lines deliveries as u201CCPu201D which we donu2019t allow in the company.

I have gone into transaction VOV6 and maintained the Req/Assembly and Avaibility checkboxes

If anyone has an idea why this is happening,

Regards,

[Former Member]

Hi,

At the outset, this is not a issue with MRP as suggested by your subject line.

This corresponds to demand transfer from SO to materials planning.

If you want the schd. line category to be CN, then the demand will never flow to MRP, so there is no qns of MRP planning this material.

Can you let us know why you dont want the demand to flow from Sales order to MRP ?

Regards,

Vivek

[Former Member]

Thank you Vivek,

Its seems that the strange behavior is due to Z modifications I just discover at the bottom of the VOV5 transaction.

MRP is now fine, the schedule lines are correct and the materials are getting planned correctly.

Best Regards,

Carlos