SAP OO OBS OCCURS 1 documentation, setup help and usage info

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Cannot Use OCCURS with Declarative Statements

In ABAP Objects, you cannot define internal tables using the OCCURS
addition in the TYPES or DATA statements (or any other declarative statement).

In ABAP Objects, the following statements cause an error message:

DATA: BEGIN OF itab OCCURS n,
...
fi ...,
...
END OF itab.

and

TYPES|DATA itab TYPE|LIKE line_type OCCURS n.

Correct syntax:

TYPES|DATA: BEGIN OF line_type,
...
fi ...,
...
END OF line_type.

TYPES itab TYPE|LIKE STANDARD TABLE OF line_type
WITH NON-UNIQUE DEFAULT KEY
[INITIAL SIZE n].

DATA itab TYPE|LIKE [STANDARD] TABLE OF line_type
[INITIAL SIZE n].

Cause:

TYPE|LIKE TABLE OF , the new addition for the DATA and TYPES statements, makes the OCCURS addition superfluous in table declarations. If necessary, you can define the initial main memory requirement using the INITIAL SIZE addition.

Note:

The system automatically updates the short form

DATA itab TYPE|LIKE TABLE of line_type.

to

DATA itab TYPE|LIKE STANDARD TABLE OF line_type
WITH NON-UNIQUE DEFAULT KEY
INITIAL SIZE 0.

so that you can use the former.

The system automatically updates the short form

TYPES itab TYPE|LIKE STANDARD TABLE of line_type.

to

TYPES itab TYPE|LIKE STANDARD TABLE of line_type
INITIAL SIZE 0.

and defines a standard table type with a generic key that can be used to type interface parameters and field symbols.

SAP OO OBS OCCURS 1 documentation, setup help and example usage