Many distribution centers/Plants use multiple units of measures for articles while purchasing, stocking and selling products. The stock keeping unit is very important feature for large distribution centers where product store in a warehouse with a packaging size. This important SUOM function is not available in SAP EWM 7.0 but was available from SAP EWM 9.0 release. This blog post explains how to enable and use Stock-Specific Unit of Measure (SUOM) in SAP Extended Warehouse Management or SAP EWM SUOM
The SUOM is a unit of measure (UOM) which is available in the background in a stock data and also while using logistics process documents such as inbound, outbound and warehouse tasks. This SUOM first data captures during the inbound process and use the data in the internal and outbound process.
What functions are available with SAP EWM SUOM
Warehouse had the ability to perform following functions with SAP EWM SUOM
The articles in the inbound delivery line items/ GRPE line items will automatically show the quantity with preferred unit of measure if articles master data contain preferred unit of measure. The inbound delivery line items will allow changing any SUOM or pack/repack the quantity with any SUOM before goods issue.
The Putaway stock will carry the same inbound delivery line item SUOM in a storage bin. We had control options of SUOM for a bin based on settings of storage type. The internal movements will carry stock-specific unit of measure unless until the destination storage type controls are different.
You can review stock overview in the monitor with SUOM in the physical inventory view. Also you had the ability to change SUOM if the monitor object method for stock attributed enabled.
Ability to ignore SAP EWM SUOM stock with stock removal rule
The pick warehouse tasks will carry the SUOM to the delivery line item based on split delivery settings. The warehouse task SUOM will display in the RF picking screen. Also ability to send communication to ERP delivery with the pick SUOM
How to enable and setup with configurations of SAP EWM SUOM
Before going for configurations, first we must activate business function.
You must activate the business function EWM, Essential Foundation Functions (SCM_EWM_FND) through transaction SFW5
The “Preferred UOM” field is controlled by the switch “/SCMB/MD_SFWS_PROD_PUOM”. This switch belongs to the business function “SCM_EWM_FND”
Unit of measure related configuration
SAP setup few standard unit of measures in the system, so first we need to check and create new unit of measures (SUOMs) both in ERP and EWM.
IMG>SAP NetWeaver>General Settings >Check Unit of Measure>
Create ISO Code and assign to new unit of measure
Do the same steps both ERP and EWM system and then only you can update the SUOM’s in the material master and CIF the articles to EWM
IMG>EWM>Master Data -> Product -> Define Unit of Measure Attributes
You can use this activity to assign a quantity classificator to a unit of measure. You can also specify whether or not the UoM is stock-specific.
Delivery related configurations
Goods Receipt Process -> Inbound Delivery -> Manual Settings -> Define Item Types for Inbound Delivery Process
This activity has been enhanced with the field Apply ERP AUoM as SUoM.
here are the settings behaviour after you apply AUOM as SUOM
if I had configure inbound item type with AUOM then system allow manually change AUOM in the delivery.
If I make the PO with AUOM then ERP gets AUOM and will get EWM Inbound with AUOM
what ever unit of measure comes from PO then that will dominate to inbound delivery and to a putway bin even what ever unit of measure comes from PO then that will dominate to inbound delivery and to a putway bin even system does not consider preferred UOM while putway when delivery had different unit of measure So the key is inbound delivery unit of measure.
Goods Issue Process -> Outbound Delivery -> Manual Settings -> Define Item Types for Outbound Delivery Process
This activity has been enhanced with the fields Apply ERP AUoM as SUoM and Update/Split Delivery Item Based on SUoM.
The ODO display only ERP unit of measure and it show base unit of measure The ODO display only ERP unit of measure and it show base unit of measure Once picked updated SUOM in the delivery
EWM>Goods Issue Process -> Strategies -> Specify Stock Removal Rule
This activity has been enhanced so that stock can be sorted taking the preferred UoM into account.
If you use this strategy, the system first proposes quants which do not have the preferred unit of measure (UoM) of the storage type from which you want to pick products. This strategy is important when using stock-specific units of measure (SUoMs). The system compares the preferred UoM in the product’s material master with the alternative UoM of the quants. If these UoMs are not the same, the system proposes the quant first. When you are working with SUoMs, the alternative UoM is set automatically in the quant during goods receipt posting.
EWM>Cross-Process Settings -> Warehouse Order -> Define Packing Profile for Warehouse Order Creation
This activity has been enhanced with the field Split WTs based on Alternative Unit of Measure
IMG>EWM>Interfaces>ERP Integration>General Settings>Set Control Parameters for ERP Version Control
If you would like to send EWM picked unit of measure to update in ERP then set “communicate Alternative unit of measure”
Storage Type/Master data
Master Data -> Define Storage Type
This activity has been enhanced with the fields Quant Addition to Stock AUoM in Storage Bin/HU and Mixed AUoM.
Here are the settings behaviour with mixed AUOM as empty means allow AUOM and indicator for addition of AUOM
Quantity addition of stock at UOM set as empty indicator
same product putway
If the bin is empty what ever SUOM you putway that will be there for all the time
If the bin had a stock of product with SUOM and the putway stock had different SUOM then it will convert to SUOM of the stock
If the bin had a stock of product with SUOM and the putway stock with BUOM it will convert to SUOM of the stock.
Quantity addition of stock at UOM set with “4” indicator
If the bin is empty what ever SUOM you putway that will be there all the time
If the bin is empty what ever SUOM you putway that will be there all the time
If the bin had a stock of product with SUOM and the putway stock had different SUOM then it will get an putway error
If the bin had a stock of product with SUOM and the putway stock with BUOM it will convert to SUOM of the stock
If the bin had BUOM and can able to change to any SUOM
In order to add AUOM change attribute then need to do below configuration
IMG>EWM>Monitoring>Define object class Methods
Next steps are from easy access to maintain Master data of unit of measure and update warehouse specific preferred unit of measure
How do preferred UoM used as a proposal in the warehouse processes:
The preferred unit of measure (UoM) is the packaging size in which you usually store a product in your warehouse. You can maintain the preferred UoM in the product master at a global level (usually maintained in ERP) and at warehouse level on SAP Easy Access screen under Start of the navigation path Extended Warehouse Management > Master Data> Product>Maintain Warehouse Product
The preferred UoM is used as a proposal in the following warehouse processes:
Inbound processing, Stock removal rules and Cartonization planning
The preferred UoM is used in inbound delivery processing and cartonization planning to propose a UoM in order to simplify the process. You can use stock removal rules to pick stock which is not in the preferred UoM first, in order to clean up the stock regarding the UoM, or you can pick stock which is actually in the preferred UoM first. for more information.
Example : The base UoM of a product is EA. Sometimes cartons containing ten EA are delivered but most of the time you receive cartons containing six EA. You set C06 (a carton containing six EA) as the preferred UoM.
To transfer a preferred UoM to EWM, you have to implement the CIF enhancement CIFMAT01 in ERP. In the enhancement implementation you can choose one of the UoMs that have already been defined for the material, such as the order unit. For more information, and an example implementation, see SAP Note 1637067.
Once setup necessary configurations and master data set up, We can process the inbound and do the putway to see the stock with SUOM and pick the stock with updated outbound delivery and send communication to ERP.
now, you will see below examples of SAP EWM SUOM from inbound to outbound
SUOM display as change mode in Expected goods receipt to create a inbound delivery. System automatically considered Article master data preferred unit of measure and displayed accordingly.
Inbound Delivery line items with SUOM from GRPE
Inbound Delivery line items with SUOM from PRDI
if you directly create a inbound delivery then you will see delivery line item quantity automatically considered preferred unit of measure
Physical stock overview
Once putaway into a bin based on the setting the SUOM’s will show as below
Stock Attribute changes means changing AUOMs of physical stock from monitor
Outbound delivery line item updated SUOM after picking SUOM item
You can see the delivery line item updated with SUOM stock that was pick completed from the bin
In order to understand fully the concept of SAP EWM SUOM, i recommend read SAP help documents. I provided here some of the links below for your reference.
SAP EWM SUOM (stock specific unit of measure) from SAP help read here
SAP EWM Preferred unit of measure from SAP help read here