Area of Responsibility AOR Query

SELECT (SELECT DISTINCT PERSON_NUMBER FROM PER_ALL_PEOPLE_F PER WHERE PER.PERSON_ID = AOR.PERSON_ID) PERSON_NUMBER,
    (SELECT DISTINCT FULL_NAME FROM PER_PERSON_NAMES_F PER WHERE PER.PERSON_ID = AOR.PERSON_ID AND NAME_TYPE = 'GLOBAL') PERSON_NAME,
    AOR.RESPONSIBILITY_NAME,
    TO_CHAR(AOR.START_DATE,'DD-MON-YYYY','NLS_DATE_LANGUAGE = AMERICAN') START_DATE,
    TO_CHAR(AOR.END_DATE,'DD-MON-YYYY','NLS_DATE_LANGUAGE = AMERICAN') END_DATE,
    AOR.RESPONSIBILITY_TYPE,
    AOR.STATUS,
    (SELECT NAME FROM HR_ALL_ORGANIZATION_UNITS HOU WHERE HOU.ORGANIZATION_ID = AOR.BUSINESS_UNIT_ID) BUSINESS_UNIT,
    (SELECT NAME FROM HR_ALL_ORGANIZATION_UNITS HOU WHERE HOU.ORGANIZATION_ID = AOR.LEGAL_ENTITY_ID) LEGAL_ENTITY,
    (SELECT NAME FROM HR_ALL_ORGANIZATION_UNITS HOU WHERE HOU.ORGANIZATION_ID = AOR.ORGANIZATION_ID) DEPARTMENT,
    (SELECT LOCATION_NAME FROM HR_LOCATIONS HL WHERE HL.LOCATION_ID = AOR.LOCATION_ID) LOCATION,
    (SELECT DISTINCT NAME FROM HR_ALL_POSITIONS_F_VL PP WHERE PP.POSITION_ID = AOR.POSITION_ID) POSITION,
    (SELECT DISTINCT NAME FROM PER_JOBS_F_TL PJ WHERE PJ.JOB_ID = AOR.JOB_ID) JOB,
    (SELECT DISTINCT NAME FROM PER_GRADES_F_TL  PG WHERE PG.GRADE_ID = AOR.GRADE_ID) GRADE,
    AOR.ASSIGNMENT_CATEGORY,
    (SELECT PAY.PAYROLL_NAME
            FROM PAY_ALL_PAYROLLS_F    PAY
        WHERE PAY.PAYROLL_ID = AOR.PAYROLL_ID
             AND TRUNC(SYSDATE) BETWEEN PAY.EFFECTIVE_START_DATE  AND PAY.EFFECTIVE_END_DATE ) PAYROLL,
   (SELECT NAME
     FROM PER_LEGISLATIVE_DATA_GROUPS_VL PLD
      WHERE PLD.LEGISLATIVE_DATA_GROUP_ID = AOR.LEGISLATIVE_DATA_GROUP_ID) LEGISLATIVE_DATA_GROUP
FROM PER_ASG_RESPONSIBILITIES AOR