SAP Function Module search on PS_H
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PS_HLP_DB_AFAB_RANGE_READ_FM - Read Relationship Data from the DB
PS_HLP_FETCH_HIERARCHY - Fetch Hierarchy Data
PS_HLP_READ_ACTY_DATA - To read activity details
PS_HLP_READ_NTWK_DATA - To read activity details
PS_HLP_UI_LOAD - Project Editor Entry
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