Can anybody help me with confirguration of EAN codes (types etc.) step by step.
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When entering a goods receipt for a purchase order, you can also enter an International Article Number/Universal Product Code (EAN/UPC) or copy it from the purchase order.
In the material master record, you can define one or more EANs/UPCs for each unit of measure. Numbers can be assigned both internally and externally.
It is not possible to enter a EAN/UPC for a purchase order item in the purchase order. However, the EAN/UPC for the order unit is stored in the purchase order.
When you enter a goods receipt for a purchase order, you can specify the following two EAN/UPC:
EAN for OUn (order unit)
At the time of a goods receipt for a purchase order, the system suggests the EAN/UPC for the order unit from the purchase order. If you enter a different EAN/UPC, the system checks whether this number already exists for the unit of measure in the material master record. If it does not exist, the system reacts as follows:
o If numbers are assigned externally, the new EAN/UPC is created if it is valid.
o If numbers are assigned internally, the system issues an error message.
For checking purposes, you can enter another EAN/UPC for another unit of measure (suggestion: stockkeeping unit) in addition to the EAN/UPC for the order unit. If the EAN/UPC does not yet exist, the system creates it in the material master record provided that numbers are assigned externally.
You can maintain the EAN/UPC on the detail screen of an item or in the item selection list (format including EAN).
refer the link below
<a href="http://help.sap.com/saphelp_470/helpdata/en/12/084876470311d1894a0000e8323352/frameset.htm">EAN CODES</a>