Serialisation fucntionality with SAP WM

[Former Member]

Hello everybody,

our current business process requires serialisation of Mechanical Parts ( due to Plant Maintenenace driven activities) and serialisation will be used across PM, MM module. We now need to track serialisation at WM level .

Can any body give useful information on how to use serialization for SAP WM ( ECC 6.0 ) functionality - across goods Receipt/ Issue , Tracking with Serial numbers at ware house level ? Can SAP WM support Serialisation fucntionalites and if not what would be best approach to support this requirement at Warehouse level ? Pl. share your ideas ,valuable suggestions on this.

Thanks much for any useful information.

Krish

[Former Member]

Hi Krish,

I had the same issue with serialization tracking at the bin level. I had to have a custom table created to track the serial numbers. I captured the warehouse number, storage unit number, and serial number. We used enhancements MWMTO001 ( TO creation)and MWMTO002 (TO conformation), and customer exits EXIT_SAPLL03T_001 to track serial number per storage units and EXIT_SAPLL03T_002 for deleting SU from the custom table when the equipment was picked. We also use RF in our warehouses and when picking a serialized material we require the serial number in order to populate the delivery.

We have two reports for this process as well. One lists the serial numbers and storage units by bin and the other is used to delete or modify the serial numbers in cases.

Within our RF transactions we also require the serial number be entered during physical inventory and cycle couting processes. We sometimes have the wrong serial number assiged within the outbound delivery during picking (due to user errors). If you have your serial numbers bar coded then you can reduce these errors.

Hope this helps,

Steve

[Former Member]

Thank you steve for such detailed information.

This will really be helpful as we start design activities considering this scenario.

Thanks to all of you for giving inputs on this.

Krish

[Former Member]

Hi

Please see SAP Help on Serialization in WM

http://help.sap.com/erp2005_ehp_04/helpdata/EN/de/2c643f301bac1ae10000000a114084/frameset.htm

RF Transaction is LM80 - 'Serial number capture'

Edd

[Former Member]

If you need control on Bin level there are three ways possible as I see it. 2 years ago we started developing this for a customer and has been live for one year now.

Either SCM and EWM, EWM supports serialnumbers on bin level.

HU for everything, and store the seriealnumber in the HU.

Or develop your own table wich is updated via the standard WM transactions.

We did the last thing and it now works quite well. All serialized material is registred in and out. In addition to this we have checks against the materialdocument and deliveries, if these already (matdoc always has) has serielnumbers assigned the ordinary pickingstrategies are skipped and we use our own table to determine the bin. It also during confirmation check against delivery and matdocs to confirm that correct serialnr are registrated. Also the inventory is done with checks to this table, and remember that the standard program in LI21 , clearing differences in IM will not work, you have to use the older RLLI2100 program where you get errors in foreground.

We also have built some temporary tabels to conserv data during registration, so the main table only is updated at the confirmation of the transaction.

The problems we have had was mainly to get the delivery updated correct, mostly due to a lot of batchsplitts. Ans data during conversion from old systems (4 different systems merged into SAP) The only errors we have now we can trace back to conversion from the old systems.

At the moment we have aprox 200000 records in our serialnr table.

We tried EWM in august 2007, then it was not a finished product. So we choose not to use it.

HU was not an option due to the type of material stored in the warehouses the process of managing the warehouse would be even more difficult. We have some 30000 different materials (not all serialized) in one of the larger warehouses and we have the solution on 37 WM locations now. With some trial and error we managed to do it all with enhancments.

Has anyone tried the EWM solution now?

Regards

Ivar

[Former Member]

Thanks for such detailed email.

Will consider this for our solution design.

Regards,

Krish

[Former Member]

There may be another idea worth considering.

If you use the serial number to be the same as the storage unit, you should be able to avoid handling units altogether.

Some customization will be necessary to transfer the serial number from the material document to the TO.

[Former Member]

Thanks for your reply. But SAP WM does not support serialisation at the bin level .

We are fine at IMand PM level . our requirement is also tracking at WM level with serial numbers.

Pl. share your experiences how you addressed serialisation approach at SAP WM level for tracking with Serial numbers.

Thanks for valuable inputs.

Regards,

Krish

[Former Member]

Yes you cannot track the serial no at bin level. one way to tackle it would be create separate Sloc for these material (which needs to be tracked) and use fixed bin strategy. so that all the serial nos will be present in a single fixed bin and information about it can be retrieved using IM.

Regards,

Vijay

[former_member536836]

I had experience where we generating serial numbers of material when we were packing material with HU. This is happening by maintaining serialised profile in material master which I mentioned in my earlier answer.

Regards,

PRashant

[Former Member]

Thanks for that information ;But that might not be feasible as we cannot control in that way .

Thanks again

Krish

[Former Member]

Thanks . We can do that through HU but that's not going to address our requirement of tracking at the Bin level.

Thanks again for your inputs.

Krish

[former_member536836]

System will not able to track at bin level.

Regards,

PRashant

[Former Member]

Hi,

Take the help of an abaper and write a custom Z program report which will fetch the required data at storage bin level.

Regards,

Vijay

[former_member536836]

Hello,

I believe if you maintain material for serialised profile in material master then it will applicable at WM level also.

Regards,

Prashant

[Former Member]

Hi Krish,

If the serialisation profile is active in PM and IM and SD module then it will be there in WM also. in my opinion you neednot maintain any specific settings. whenever, you are receiving/issuing the material in IM or SD it will be sking for serial no which could be manually enetered or automatically generated by the system. The WM activity will be governed by IM and SD activity only.

Regards,

Vijay