on 02-27-2012 8:16 AM
Hi ,
We are in process of implementing MRP for a plant.
Query
Do we need to schedule MDAB for the planning file entry before MRP job( NETCH) or run MDAB just once.
If we do not schedule this job and run just once what are the problems we will face.
Thanks,
Anup
Hello,
MDAB is a batch program to set up planning file entries. So after you run this program, system will make planning file entries for all those materials which might have missed the entry.
This normally does not happen, but as a good practise it is better to run MDAB & MDRE, to ensure that the planning file entries are consistent.
Effects as such: As you might know already, if a planning file entry does not exist for a material it will not be considered in MRP run.
When to Run the Job:
There is no need to run this transaction regularly, unless otherwise you find a lot of inconsistency and some material which are supposed to get planned in MRP run are not getting planned.
SAP automatically creates a planning file entry for the material whenever an MRP related change is happening for the material. Some times due to inconsistencies in the system, this entry is not made, so that materials would not get planned in MRP run, only when you face problem like this you need to run MDAB
Hope the above clarifies.
Regards
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Hello,
NETCH is any material that has undergone some changes since last MRP run. (e.g. you have created a new planned order for the material, so all other planning data has to be replanned according to this change)
NETPL is any material that has undergone some changes since last MRP run, and those changes are in the planning horizon. (e.g. you have created a planned order which is inside the planning horizon. If your planning horizon is 3 months, and you created planned order for a date 5 months from now, that material is not included in planning with NETPL)
All i can suggest is schedule MDRE to check the planning file consistency & if you notice any issues, then schedule MDAB
Hope the information was useful,If useful reward accordingly
Regards
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