2 Step Picking For Replenishment.

Question

Hello Experts
We would like to implement 2 Step Picking for our replenishment process.  I have looked at the posts in this forum and have found some answers but I still do not have the whole story.
Our scenario is this.  Within a specific storage type BKP we have some materials that we want to replenish in a single step from a secondary storage type BSC.  These would be bulky items that we would take from high storage using a forklift and move directly to primary storage.  We also have smaller items where it would make more sense to first pick and place in an interim storage area and then in a second step put them away in the primary storage area.
I have enabled 2 step picking and created 2 movement types 850 and 851.  850 moves items from a dynamically assigned source bin in the interim storage type  (200) to the primary storage area BKP.  I have configured the replenishment to use this movement type.  The second movement type moves items from secondary BSC to the interim storage area 200 and is used to create the requirement for step 1 of the pick.  I turned on 2 Step picking for the warehouse and configured it to use 851 for the removal phase of the pick.  I also checked the box to make the 2 Step process material dependent.  In the material master warehouse management view I selected option 2 in the step-picking field for those items which are to be relevant for 2 Step picking.
My execution process is as follows :
1) I run LP21 to create the replenishment  requirements.
2) I run LT41 to group the requirements.  This process correctly identifies which items are relevant for 2 Step picking and which are not.
3) I run LT0E to create the picks for those items which are relevant for 2 Step picking.  The process correctly prompts me to to create TOs for the 2 Step items and I am able to create the TOs to move product from BSC(Secondary Storage) to 200(Interim Storage)
4) I confirm the TOs.
5) I run LT42 to create the TOs to put all the items whether 1 Step or 2 Step into Primary storage.
Here's where I hit a problem.  The 2 Step items are fine.  The TOs are successfully created to move items from the Interim Storage area to BKP (the primary location)  But now SAP also tries to use the Interim Storage area as the source for the 1 Step picks instead of getting them from their original location in BSC.
I cannot see how to get SAP to use a different movement type for the one step picks than the 2 step picks ?
Should it be possible to use a mix of 1 Step and 2 Step picks for the same replenishment ?  If so how do you get SAP to correctly separate them ?
Thanks in advance.

Answer 1

Hi
I hope the below clarification would make you understand the scenario in a simple way.
In Inventory Management (MM) whatever you do, it will have its effect in WM.
This is done thru movement type. Every movement type of MM is linked with WM.
In inventory management the movement type is used to determine the G/L account and has some other functionalities. Likewise in WM the movement type is used to identify the Source and Destination storage types.
When you make GR in IM, it creates the accounting document in MM and subsequently triggers a TR (Transfer requirement) in WM. If you make a transfer posting(material to material) in IM, then the TR generated in WM is called as Posting Change Notice.
The replenishment will happen when you maintain the maximum and minimum level and the replenishment qty details in Material Master.It is nothing but it will trigger a TR specifying the a destination bin where the material level has gone low.
Each IM movement type is linked with WM movement type with the help of Reference movement type..
Hope this clarifies your doubt.
Reward if useful.
Regards
edwin