What is a structure in ABAP?

A structure groups several related fields of potentially different types together under one name — similar to a struct in C or a plain data class in other languages — commonly used to represent one row's worth of data, such as a single customer record with fields for ID, name, and address.

DATA: BEGIN OF ls_customer,
        kunnr TYPE kunnr,
        name1 TYPE name1_gp,
        land1 TYPE land1,
      END OF ls_customer.

ls_customer-kunnr = '0000001234'.
ls_customer-name1 = 'Acme Corp'.

Structures are frequently defined to mirror a database table's row layout, and they're what an internal table actually holds many of — you can think of an internal table as a list of structures, each structure representing one row's worth of data.

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