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MRP_Difference between procurement proposal calculation dates for two materials in same plant

saravanangceb
Explorer
0 Kudos
458

Hi Team,

Need your expert insights on this. I have gone through multiple threads but haven't got right answers.

We have two materials - Material A and B belonging to same plant. For these two materials all the number of days maintained in MARC are similar.(which means Planned delivery time(PDT),GR processing Time(GRT),Sch.Margin Key(SMK),In-House production(IHP)) and also in plant level planning horizon 80 days maintained in SPRO in OMI8 transaction. These two materials has procurement type F and lot size EX and we don't any MRP area defined in SPRO and MRP Type is ZD - Demand Management.

MARC table

MRP type - ZD - Demand Management

However if we run MRP in MD03 with processing key NETCH with create purchase requisition 2 option

for Material A - till 148 days from today it creates PR,later to it planned order.

PDT+GRT+SMK+IHP+planning horizon = 35+3+5+25+80 = 148 days

MD03 for Material A

MD04 - planning results for Material A

for Material B - till 33 days from today it creates PR,later to it planned order.

PDT+GRT+SMK+IHP+planning horizon = 0+ 3+5+25+0 = 33 days

MD03 for Material B

MD04 - Planning results for Material B

We would like to know even though these two materials has same information in all levels why for material B - PDT and planning horizon is not calculated in total. System considers it as zero and hence making the total to 33 days.

I have attached all relevant screen shots as well. Can you kindly help in providing your inputs why system behaves differently for these two materials even though all parameters are same? or Am I missing any other items? Kindly advice team.

Thanks in advance.

Regards,

Saravanan D

Accepted Solutions (0)

Answers (5)

Answers (5)

saurabh_nigade
Participant
0 Kudos

Hi Saravanan,

It is normal behavior of MRP. System is generating PRs as per the requirement dates.

Thanks,

Saurabh

former_member184670
Active Participant
0 Kudos

Saravanan,

Thank you for reverting back!!

Yes pls remove the Inhouse Production Time in Material Master for Procurement Type - "F" and rerun the MRP again.

Will validate still the materials considered for other materials or not.

Thanks,

Sundhu

former_member184670
Active Participant
0 Kudos

Saravanan,

Thank you for sharing the detailed analysis.

For Procurement type F, you no need to include Inhouse Production Time.

Would you please check and revert back!!

Thanks,

Sundhu

saravanangceb
Explorer
0 Kudos

Hi Sindhu,

Thanks for your comment. When you say "no need to include Inhouse Production Time" --> which means we should remove Inhouse Production time from MARC for material which procurement type F?

Can you kindly update why for one material PDT and Planning horizon is calculated in back ground while determining procurement proposals dates for PR/planned order and why not these two dates not considered for other material?

Regards,

Saravanan D

0 Kudos

Hi Saravanan,

It looks you are also suing in house production time 25 days which is not required in case of procurement type F.

I run the same scenario, it work fine.

Regards

Ahmed Zaidi

0 Kudos

Here are attached files.

Ahmed Zaidi

dom2021
Active Participant
0 Kudos

Hello,

IT looks like the requirment dates for the reservations are more than 100 days apart. Also, for purchase requisition only the PDT and GR processing time is considered by the MRP program.

Please enter the reservation requirement dates same and run MRP again.

Thanks,