ABAP Keyword Documentation → ABAP Glossary
Call sequence
A call sequence is the set of programs whose
internal sessions are loaded by a sequence of calls using
SUBMIT ... AND RETURN or CALL TRANSACTION in a joint
main session. You can return to the preceding programs in the call sequence from every program. The first program in a call sequence is the
top level transaction. The programs of a call sequence have collective access to the
ABAP Memory. A call sequence
can be left completely using the statement LEAVE TO TRANSACTION.