SAP STRUC COMP NAMES - Guide

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Names of Structure Components

ABAP_BACKGROUND
When ABAP programs are executed, the names of data objects usually only have the task of identifying the data objects uniquely. The ABAP statements operate directly with the objects in question without attaching any special meaning to their names. The names of structure components are an exception here. They are evaluated in the following cases:

When structure components are assigned using

the statement MOVE-CORRESPONDING

the component operator CORRESPONDING

the system class CL_ABAP_CORRESPONDING

In AB_SQL , in the addition CORRESPONDING of the statement SELECT

In obsolete calculation statements like ADD-CORRESPONDING
In these language constructs, the names of the components of the structures in question are compared and the operation is executed using the identically named components (if not overridden by a mapping rule).

ABAP_RULE
Give structure components with the same meaning the same names
Give the components of structures that have the same meaning within a data model the same names

ABAP_DETAILS
This rule mainly applies to data models defined in ABAP Dictionary (including ABAP CDS). If one of the CORRESPONDING constructs above is used in an ABAP program to access structures or structured internal tables (and the structured types of these structures or tables are defined like database tables or CDS entities using types from the data model in ABAP Dictionary), it is essential that components from different structures but with the same semantics have the same name.

ABAP_EXAMPLE_BAD
The database tables DOKIL DOKHL, and DOKTL are in the same package and the same application. The column whose type is determined by the data element DOKVERS has the same name (DOKVERSION) in DOKHL and DOKTL, but the name in DOKIL is VERSION.
ABAP_EXAMPLE_END

ABAP_EXAMPLE_GOOD
Columns of the familiar structures used in the flight data model in training and documentation that have the same semantics usually also have the same names.
ABAP_EXAMPLE_END