Now By Pressing  the Distribution  Button.
Enter the Distribution Level details as shown below  screen shot.
 
Once the Account is Generated.
àNavigate to Invoice page Actions .
Enable the Check box Validate and press OK button
 
Create the Account by Enabling the Create Accounting check box and   Final and press OK   from the Above Screen.
Once the Account is Generated Run the ‘Invoice Approval Workflow’  .
Navigation : view Ã  Requests
Parameters :
Supplier Name ,Invoice Num .
 
Once the Program complete successfully, follow the below steps
Navigate : Reports Ã  View Invoice  Approval History
You will get the Account Manager  details for the Invoice  and the notification will be sent to the Approver.
CREATE OR REPLACE FUNCTION XX_GET_APPROVER( p_invoice_id IN NUMBER )
    RETURN VARCHAR
  IS
    l_person_id      NUMBER        := 0 ;
    l_count          NUMBER        := 0;
    V_OPERATING_UNIT VARCHAR2(2000):=NULL;
    V_ORG_ID         NUMBER        := 0;
    l_return_val     VARCHAR2(200) := NULL;
  BEGIN
    BEGIN
      SELECT COUNT(*)
     INTO l_count
      FROM ap_invoices_all ail,
        ap_suppliers aps
        --    po_lookup_codes plc
      Where Ail.Vendor_Id              = Aps.Vendor_Id
      And NVL(Aps.Vendor_Type_Lookup_Code,'XYZ') <>'OUTSOURCING'
--      AND aps.vendor_type_lookup_code <>'OUTSOURCING'   
        -- and aps.vendor_type_lookup_code = plc.lookup_code
      AND ail.invoice_type_lookup_code IN ('PREPAYMENT', 'STANDARD','MIXED')
      AND ail.invoice_id                = p_invoice_id;
      --   and plc.lookup_type <> 'VENDOR TYPE' ;
    EXCEPTION
    WHEN OTHERS THEN
      DBMS_OUTPUT.PUT_LINE('Invoice does not exist :');
    END;
    DBMS_OUTPUT.PUT_LINE('Invoice does not exist l_count :'||l_count);
    IF l_count >= 1 THEN
      BEGIN
        SELECT org_id
        INTO V_ORG_ID
        FROM ap_invoices_ALL
        WHERE invoice_id=p_invoice_id;
      EXCEPTION
      WHEN OTHERS THEN
        DBMS_OUTPUT.PUT_LINE('Invoice orgid does not exist :');
      END;
      DBMS_OUTPUT.PUT_LINE('Org id Value :'||v_org_id);
      BEGIN
        SELECT name
        INTO V_OPERATING_UNIT
        FROM hr_operating_units
        WHERE organization_id=v_org_id;
      EXCEPTION
      WHEN OTHERS THEN
        DBMS_OUTPUT.PUT_LINE('operating unit does not exist :');
      END;
      DBMS_OUTPUT.PUT_LINE('Org id Value :'||V_OPERATING_UNIT);
      BEGIN
        IF v_operating_unit LIKE 'operations' THEN
          SELECT paf1.person_id
          INTO l_person_id
          FROM HR_ALL_POSITIONS_F HAPF,
            PER_JOBS PJB ,
            PER_ALL_PEOPLE_F PAF1,
            FND_USER FU ,
            PER_ALL_ASSIGNMENTS_F PAAF
          WHERE SUBSTR(HAPF.name,INSTR(HAPF.name,'.',1)+1,15)='Account Manager'
          AND PJB.NAME                                       ='Manager'
          AND PAAF.PERSON_ID                                 =PAF1.PERSON_ID
          AND HAPF.JOB_ID                                    = PJB.JOB_ID
          AND PAAF.JOB_ID                                    =PJB.JOB_ID
          AND PAAF.POSITION_ID                               =HAPF.POSITION_ID
          AND (sysdate BETWEEN PAAF.EFFECTIVE_START_DATE AND PAAF.EFFECTIVE_END_DATE)
          AND (sysdate BETWEEN paf1.effective_start_date AND paf1.effective_end_date)
          AND PAAF.JOB_ID            =HAPF.JOB_ID
          AND FU.EMPLOYEE_ID         =PAF1.PERSON_ID
          AND rownum                 =1
          AND SUBSTR(HAPF.name,1,2) IN
            (SELECT FLEX_VALUE
            FROM FND_FLEX_VALUE_SETS FFVS,
              FND_FLEX_VALUES FFV ,
              FND_FLEX_VALUES_TL FFVT
            WHERE FFVS.FLEX_VALUE_SET_ID=FFV.FLEX_VALUE_SET_ID
            AND FFV.FLEX_VALUE_ID       =FFVT.FLEX_VALUE_ID
            AND FFVT.LANGUAGE           ='US'
            AND FLEX_VALUE_SET_NAME     ='operations_Company'
            AND FFVT.DESCRIPTION        ='Operations'
            );
        elsif v_operating_unit='glass' THEN
          SELECT paf1.person_id
          INTO l_person_id
          FROM HR_ALL_POSITIONS_F HAPF,
            PER_JOBS PJB ,
            PER_ALL_PEOPLE_F PAF1,
            FND_USER FU ,
            PER_ALL_ASSIGNMENTS_F PAAF
          WHERE SUBSTR(HAPF.name,INSTR(HAPF.name,'.',1)+1,15)='Account Manager'
          AND PJB.NAME                                       ='Accountant' --'Manager'
          AND PAAF.PERSON_ID                                 =PAF1.PERSON_ID
          AND HAPF.JOB_ID                                    = PJB.JOB_ID
          AND PAAF.JOB_ID                                    =PJB.JOB_ID
          AND PAAF.POSITION_ID                               =HAPF.POSITION_ID
          AND (sysdate BETWEEN PAAF.EFFECTIVE_START_DATE AND PAAF.EFFECTIVE_END_DATE)
          AND (sysdate BETWEEN paf1.effective_start_date AND paf1.effective_end_date)
          AND PAAF.JOB_ID            =HAPF.JOB_ID
          AND FU.EMPLOYEE_ID         =PAF1.PERSON_ID
          AND rownum                 =1
          AND SUBSTR(HAPF.name,1,2) IN
            (SELECT FLEX_VALUE
            FROM FND_FLEX_VALUE_SETS FFVS,
              FND_FLEX_VALUES FFV ,
              FND_FLEX_VALUES_TL FFVT
            WHERE FFVS.FLEX_VALUE_SET_ID=FFV.FLEX_VALUE_SET_ID
            AND FFV.FLEX_VALUE_ID       =FFVT.FLEX_VALUE_ID
            AND FFVT.LANGUAGE           ='US'
            AND FLEX_VALUE_SET_NAME     ='Company'
            AND FFVT.DESCRIPTION        ='glass'
            );
        Elsif v_operating_unit LIKE 'suretech' THEN
          SELECT paf1.person_id
          INTO l_person_id
          FROM HR_ALL_POSITIONS_F HAPF,
            PER_JOBS PJB ,
            PER_ALL_PEOPLE_F PAF1,
            FND_USER FU ,
            PER_ALL_ASSIGNMENTS_F PAAF
          WHERE SUBSTR(HAPF.name,INSTR(HAPF.name,'.',1)+1,15)='Account Manager'
          AND PJB.NAME                                       ='Manager'
          AND PAAF.PERSON_ID                                 =PAF1.PERSON_ID
          AND HAPF.JOB_ID                                    = PJB.JOB_ID
          AND PAAF.JOB_ID                                    =PJB.JOB_ID
          AND PAAF.POSITION_ID                               =HAPF.POSITION_ID
          AND (sysdate BETWEEN PAAF.EFFECTIVE_START_DATE AND PAAF.EFFECTIVE_END_DATE)
          AND (sysdate BETWEEN paf1.effective_start_date AND paf1.effective_end_date)
          AND PAAF.JOB_ID            =HAPF.JOB_ID
          AND FU.EMPLOYEE_ID         =PAF1.PERSON_ID
          AND rownum                 =1
          AND SUBSTR(HAPF.name,1,2) IN
            (SELECT FLEX_VALUE
            FROM FND_FLEX_VALUE_SETS FFVS,
              FND_FLEX_VALUES FFV ,
              FND_FLEX_VALUES_TL FFVT
            WHERE FFVS.FLEX_VALUE_SET_ID=FFV.FLEX_VALUE_SET_ID
            AND FFV.FLEX_VALUE_ID       =FFVT.FLEX_VALUE_ID
            AND FFVT.LANGUAGE           ='US'
            AND FLEX_VALUE_SET_NAME     ='child_Company'
            And Ffvt.Description        ='child'
            ); 
        Elsif v_operating_unit='master' THEN
          SELECT paf1.person_id
          INTO l_person_id
          FROM HR_ALL_POSITIONS_F HAPF,
            PER_JOBS PJB ,
            PER_ALL_PEOPLE_F PAF1,
            FND_USER FU ,
            PER_ALL_ASSIGNMENTS_F PAAF
          WHERE SUBSTR(HAPF.name,INSTR(HAPF.name,'.',1)+1,15)='Account Manager'
          AND PJB.NAME                                       ='Manager'
          AND PAAF.PERSON_ID                                 =PAF1.PERSON_ID
          AND HAPF.JOB_ID                                    = PJB.JOB_ID
          AND PAAF.JOB_ID                                    =PJB.JOB_ID
          AND PAAF.POSITION_ID                               =HAPF.POSITION_ID
          AND (sysdate BETWEEN PAAF.EFFECTIVE_START_DATE AND PAAF.EFFECTIVE_END_DATE)
          AND (sysdate BETWEEN paf1.effective_start_date AND paf1.effective_end_date)
          AND PAAF.JOB_ID            =HAPF.JOB_ID
          AND FU.EMPLOYEE_ID         =PAF1.PERSON_ID
          AND rownum                 =1
          AND SUBSTR(HAPF.name,1,2) IN
            (SELECT FLEX_VALUE
            FROM FND_FLEX_VALUE_SETS FFVS,
              FND_FLEX_VALUES FFV ,
              FND_FLEX_VALUES_TL FFVT
            WHERE FFVS.FLEX_VALUE_SET_ID=FFV.FLEX_VALUE_SET_ID
            AND FFV.FLEX_VALUE_ID       =FFVT.FLEX_VALUE_ID
            AND FFVT.LANGUAGE           ='US'
            AND FLEX_VALUE_SET_NAME     ='master_Company'
            AND FFVT.DESCRIPTION        ='master'
            );
        ELSE
          l_person_id:=0;
        END IF;
      EXCEPTION
      WHEN OTHERS THEN
        l_person_id :=0;
      END;
      DBMS_OUTPUT.PUT_LINE('person id Value :'||l_person_id);
    ELSE
      l_person_id :=0;
    END IF;
    DBMS_OUTPUT.PUT_LINE('Invoice does not exist l_person_id :'||l_person_id);
    l_return_val := 'person_id:' ||TO_CHAR(l_person_id);
    RETURN (l_return_val);
  EXCEPTION
  WHEN OTHERS THEN
    l_person_id :=0;
    Return (L_Return_Val);
  End XX_Get_Approver;