Application of additional commodities in the retail industry

Additionals article ):
This is a standard function of SAP to provide additional functions for normal products and personalized product settings for retail enterprises, for example, the item master data does not contain a description field for the item rule/Rule quantity, and you need to print this field on the price tag. The unit of SAP is generally an English description, however, you cannot open price tags in the store in English, and SAP does not provide standard primary data support for storage methods or consumption methods of some products, in this case, you can define additional items to implement these functions.
The attached item corresponds to a normal item: wtaddi (table). The maintenance value is stored in the table mamt. The relation is matnr, and mtxid can locate the description information, additionals article is also the Standard for interacting with external data (IDOC,
Message Type: wbbdld
Segment: E1wtadal1: assortment list IDOC: additionals