SAP DERIVED TYPES KEY ABAP Statements

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• %key ABAP_BDEF_DER_TYP_COMP

%key

ABAP_USE
%key is a component group in BDEF derived types. The component group contains the primary key fields of a RAP BO instance. Thus, it serves as an identifier for persisted instances.
Wherever %key can be specified within ABAP_EML statements during the RAP interaction phase, %tky can be specified, too. Since the component group %tky includes %key, it is recommended that %tky is specified instead of %key also in non- draft scenarios. %tky also contains the draft indicator %is_draft. When using %tky in non-draft scenarios, you are prepared for a later switch to a draft scenario and you can avoid lots of adaptations in the code.
Type
The key fields in %key have their original line type. In case of the use within %control , the type of the key fields is ABP_BEHV_FLAG .