Bulk putaway is not supported for mix stock types

[former_member183155]

Hi all ,

I created 0020 storage type. When i putaway , sap can not find available storage bin if it contains a HU with a different stock type.

Example : M1-01 has 3 pallet capacity (bulk)

M1-01 stock HU0001 has F2 status.

When i try to create wt that contains Q4 stock status, SAP can not find destination bin if it is available capacity.

Note : Mix stock type is not selected in storage type.

Brgds

M.Ozgur Unal

[KB2408]

Hello,

Did you find any solution for this ? I have similar requirement:

Bulk Area havibg block structure as 3 HU in 1 bin, I have implemented POSC with following step:

Unloading

Decon

Quality

Final Put-away

After unloading/receiving 1st HU following steps took place:

1. Inspection document gets created.

2. IB02 WT gets created.

3. IB03 WT gets created with Stock type Q3 for material with bin as bulk Bin.

After Decon, quality decision usage decision & final putaway stock type changed to F2.

Now while receiving 2nd HU w.r.t. new inbound delivery, same process follows but same bulk bin did not get deteremine eventhough same material is being received.

Reason being that HU lying in bulk bin is having F2 as stock type and stock type in IB03 for 2nd HU after unloading is Q3 (as decon and quality are yet to be performed).

Thanks,

KB

[JuergenPitz · Accepted solution]

Hi,

my idea? That it doesn't work?

Seriously: in general, mixed storage in a bulk storage storage type is a bad idea. And I write bad idea, because I do this in writing. I use a different description in a personal discussion...

Then: you activated Mixed Storage: "2 Several HUs with different Batches of the same product". But you do not have different batches (well, maybe you also do), you write that you have two stock types. So for this you would have to select "Mixed Storage without Limitations".

If I remember correctly the behavior of this field has changed in between releases. In my system I can set mixed storage without limitations (which surprises me), but actually the system does not create a mixed storage. Which might either be that it is simply not intended to work in a bulk storage type (the documentation is not really consistent) or that it is a bug (in which case you should open a ticket).

Brgds

Juergen

[former_member183155 · Accepted solution]

I will open a ticked to SAP ! I hope that they ll create SAP Note for this.

Brgds

M.Ozgur Unal

[former_member543347 · Accepted solution]

Hi Juergen,

Why would you have to select "Mixed storage without limitations" if you want to putaway different stock types of the same product and batch?

I have several storage types setup like this: no mixing at bin or HU level, but the "Mixed stock types" is not marked. This allows us mixing free stock with quality stock, for example, which is vital for a quarantine process. I hope this does not change in new releases! Otherwise we would need to switch from standard putaway to Badi, and that's the last thing I want!

[JuergenPitz]

Hi,

well, SAP Note "2180663 - Improvement: Mixed storage in bulk storage" explains it.

So I remembered correctly, it was not possible to select "mixed storage without limitation" in my 9.3 system (for which this note is valid), but in 9.5 it is now possible to select.

The important information is in this sentence "Note that mixed storage can be brought about only by user entries or by determining the destination storage bin in the BAdI. After you implement this SAP Note, the standard putaway strategy does not result in mixed storage." Which is very difficult to understand in the translation, but what the second sentence means is clear. The system will not create a mixed storage by itself. You need to implement a BAdI for it, it just doesn't mention which one specifically.

So no bug, works as designed.

Brgds

Juergen

[JuergenPitz]

Hi,

"This has to be like this, I don't see any other option - we don't have space to buffer thousands of euro pallets until the usage decision is done, which can take up to 48 hours."

Thousands of pallets - What else then something with a strategy like open storage would you be able to use - if not every pallet has it's own bin? And in open storage you have to allow complete mixed storage, otherwise it doesn't make sense.

Or do you have different materials at the same time but don't want to mix this? Well, then I guess a BAdI is what you need to look into.

Brgds

Juergen

[former_member543347]

Hi Juergen,

Maybe I didn't explain myself clearly. We are working with bulk storage, storing only one batch per bin, but allowing different stock types (blocked, free, quality) in the same bin. In my opinion it makes perfectly sense and here is why:

Each production line can produce roughly 100 euro pallets per hour. So roughly 2400 pallets (HUs) per day. There are several lines per plant, so 15.000 pallets per day on a location is realistic.

Every production order has a single batch. A production runs for approximately 24 hours. So we have around 2400 HUs of the same product and batch to be putaway within 24 hours.

We work mostly with bulk (open) storage types. Bin capacity depends of course on bin type and stacking factor of the product. A realistic figure is 120 pallets per bin.

So for a typical batch of 2400 HUs, we need 20 bins. And of course we don't allow complete mixed storage - that would not make any sense! It would be impossible to pick anything!

We produce in Q stock and HUs are relased to free stock one by one afer inspection check. This release can happen as soon as some minutes after production, even while the HU is being putaway. This work because we putaway with HU tasks, so it is possible to change the stock type while the HU is being moved. So it is a must for us to allow different stock types of the same material/batch, but not to allow mixed stock without restrictions.

With our current (9.0) EWM version, this works with this setup:

With EWM 9.5, which we are currently testing in a sandbox system, it works differently.

In 9.5, when "Mix. Stck Types" is unchecked, then it is still allowed to mix stock types in a bin, but an addition to existing stock when the stock type is different is not automatically determined. So unfortunately, we will have to use a BADI - something that I always tried to avoid, especially in putaway.

[JuergenPitz]

Hi,

"Why would you have to select "Mixed storage without limitations" if you want to putaway different stock types of the same product and batch? I have several storage types setup like this: no mixing at bin or HU level, but the "Mixed stock types" is not marked. This allows us mixing free stock with quality stock, for example, which is vital for a quarantine process. I hope this does not change in new releases!"

Well, from the documentation I would have said that the selection "2 Several HUs with different Batches of the same product" or "1 Several HUs with one product / batch" would not mix different stock types, but I have never tried that before and so my answer would have been: MIXING IS A BAD IDEA and that mixing stock types does not work and is probably a bug in your system.

But now I had the chance to try it - and of course, in my system the putaway warehouse task does not mix different stocks in one bin in the bulk storage. Again, it is a bad idea to try something like this.

Brgds

Juergen

[former_member543347]

Well, I'll have to test in my EWM 9.5 sandbox, but if it is like this, we have an issue. In our business case (and I'm sure we are not the only ones) we produce in quality stock with inspection document. One inspection document per HU. So we start putting away Q stock on a bin.

At some point the usage decision is made for the inspection document. If the decision deals to a change of stock type from Q to F, then the corresponding change is automatically posted. If the decision is made for a number of HUs only, then the result is that we have immediately stock in F and stock in Q in the same bin (even we originally putaway stock in F only). This has to be like this, I don't see any other option - we don't have space to buffer thousands of euro pallets until the usage decision is done, which can take up to 48 hours.

Now, we have in a bin 80 HUs in Q stock and 12 HUs in F stock. But the production goes on (same material, same batch). What should we do? Start putting away in an empty bin? This is absolutely a no-go. There is an assumption that Q stock will most likely be changed into F stock in the near future (that's why Q stock is in standard MRP-relevant while blocked stock is not) and accordingly, it makes sense to putaway Q stock together with F stock. If finally the usage decision is not positive for some of the HUs and you need to invest some resources in sorting out HUs from the bin in order to scrap it, that's a risk we are happy to take. But the alternative could be having hundreds of partially occupied bins - and that's a no go!

[former_member183155]

Hi Juergen Pitz ,

What is your idea ?

Brgds

M.Ozgur Unal