Script PCPOXRESPO when run on package generate error

When run the script PCPOXRESPO on package body generate the following errors:

PLS-00201:identifier PO_CORE_S2.round_and_convert_currency must be declared

ame_approval_id = po_ame_approvals_s.nextval, PL/SQL: ORA-02289: sequence does not exist

po_bc_distributions ORA-00942 table or view does not exist

We need run the script for reset status purchase order from in process or pre approved to incomplete but for concurrent request but generate error on procedure.