In Customizing for the Material Master , under Configuring the Material Master, you can configure the material master to include table fields of your own. The data contained in the customer-specific fields can also be distributed by Application Link Enabling (ALE).
If you want to use ALE to distribute customer-specific data, you must do the following:
Activate SAP Enhancement MGV00001.
For more information, see Changing the SAP Standard .
Define the necessary source code for the following user exits contained in SAP Enhancement MGV00001:
EXIT_SAPLMV01_002
EXIT_SAPLMV03_002
For more information, see the documentation for SAP Enhancement MGV00001 and for the user exits.
Create a new IDoc segment.
For more information, see the SAP library documentation BC IDoc Interface/Electronic Data Interchange, Defining New IDoc Types .
When material master data is distributed by ALE, the customer-specific data is read in outbound processing and transferred to the customer-specific IDoc segment via user exit EXIT_SAPLMV01_002. In inbound processing, the customer-specific data is taken from the corresponding IDoc segment and posted in the target system via user exit EXIT_SAPLMV02_002.