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Internal tables and structures that are typed with BDEF derived types contain special components whose names begin with % to avoid naming conflicts with components of the CDS entities.
The following table contains obsolete components of BDEF derived types:
|%pky||Preliminary key. It serves as an identifier in a transaction in which a RAP BO instance is created. In an early numbering scenario, %pky is equal to %key (and, thus, serves, in principle, also as an identifier for persisted RAP BO instances). In a late numbering scenario, it is equal to the combination of %pid and %key. This identifier does not change between the creation of an instance and the next saving. \lbr \lbr Note: Using %tky is generally preferable to %pky.||Wherever %key is possible except for CREATE operations.||Structure whose components are comprised of %key.|