'expression is of wrong type' - but which and where..?

Question

hello.
Hopefully this will be clear as day to someone.. Please could someone tell me why I'm getting the following error message..
[061010_042222995][][EXCEPTION] SQLException encounter while executing data trigger....
java.sql.SQLException: ORA-06550: line 4, column 20:
PLS-00382: expression is of wrong type
ORA-06550: line 4, column 1:
PL/SQL: Statement ignoreddata template where trigger is called..
  <?xml version="1.0" encoding="utf-8" ?>
- <dataTemplate name="UofS_OutstandngExpenses_Report" defaultPackage="SUBIXCLT" dataSourceRef="FINDEV" version="1.0">
- <properties>
  <property name="xml_tag_case" value="upper" />
  <property name="include_parameters" value="true" />
  <property name="debug_mode" value="on" />
  </properties>
- <parameters>
  <parameter name="p_claimant" dataType="character" defaultValue="" />
  <parameter name="p_expense_date_from" dataType="date" defaultValue="" />
  <parameter name="p_expense_date_to" dataType="date" defaultValue="" />
  <parameter name="p_raisedby" dataType="character" defaultValue="" />
  <parameter name="p_status" dataType="character" defaultValue="" />
  <parameter name="p_ordered_by" dataType="varchar2" defaultValue="" />
  </parameters>
- <dataQuery>
- <sqlStatement name="Q1">
- <![CDATA[
SELECT DISTINCT
erh.invoice_num,
pap.full_name EMP_CLAIMING,
DECODE(NVL(erh.expense_status_code, 'Not yet Submitted (NULL)'), 'CANCELLED', 'CANCELLED',
     'EMPAPPR', 'Pending Individuals Approval',      'ERROR', 'Pending System Administrator Action',
     'HOLD_PENDING_RECEIPTS     ', 'Hold Pending Receipts', 'INPROGRESS', 'In Progress', 'INVOICED', 'Ready for Payment',
     'MGRAPPR', 'Pending Payables Approval', 'MGRPAYAPPR', 'Ready for Invoicing', 'PAID', 'Paid',
     'PARPAID', 'Partially Paid',     'PAYAPPR', 'Payables Approved',     'PENDMGR', 'Pending Manager Approval',
     'PEND_HOLDS_CLEARANCE', 'Pending Payment Verification',     'REJECTED', 'Rejected',     'RESOLUTN',     'Pending Your Resolution',
     'RETURNED',     'Returned',     'SAVED',     'Saved',     'SUBMITTED',     'Submitted',     'UNUSED',     'UNUSED',
     'WITHDRAWN','Withdrawn',     'Not yet Submitted (NULL)') "EXPENSE_STATUS" ,
NVL(TO_CHAR(erh.report_submitted_date,'dd-MON-yyyy'),'NULL') SUBMIT_DATE,
NVL(TO_CHAR(erh.expense_last_status_date,'dd-MON-yyyy'),'NULL') LAST_UPDATE,
erh.override_approver_name ER_Approver,
fu.description EXP_ADMIN,
erh.total,
erh.description 
FROM
AP_EXPENSE_REPORT_HEADERS_all erh,
per_all_people_f pap, fnd_user fu
WHERE erh.employee_id = pap.person_id
AND fu.user_id = erh.created_by
AND NVL(erh.expense_status_code, 'Not yet Submitted') NOT IN  ('MGRAPPR', 'INVOICED', 'PAID', 'PARPAID')
AND pap.full_name = NVL(:p_claimant, pap.full_name)
AND TRUNC(erh.report_submitted_date) BETWEEN NVL(:p_expense_date_from, '01-JAN-1999') AND NVL(:p_expense_date_to,'31-DEC-2299')
AND fu.description = NVL(:p_raisedby,fu.description)
AND erh.expense_status_code = NVL(:p_status,erh.expense_status_code) &L_ORDERED_BY
  ]]>
  </sqlStatement>
  </dataQuery>
  <dataTrigger name="beforeReport" source="SUBIXCLT.beforeReportTrigger" />
- <dataStructure>
- <group name="G_XP_CLM_TRACKNG" source="Q1">
  <element name="INVOICE_NUM" value="INVOICE_NUM" />
  <element name="EMP_CLAIMING" value="EMP_CLAIMING" />
  <element name="EXPENSE_STATUS" value="EXPENSE_STATUS" />
  <element name="SUBMIT_DATE" value="SUBMIT_DATE" />
  <element name="LAST_UPDATE" value="LAST_UPDATE" />
  </group>
  </dataStructure>
  </dataTemplate>and the package spec & body..
--THE SPEC...
CREATE OR REPLACE PACKAGE Subixclt IS
FUNCTION beforeReportTrigger RETURN VARCHAR2;
p_order_by VARCHAR2(50);
l_ordered_by VARCHAR2(350);
p_claimant  VARCHAR2(80);
expense_date_from DATE;
expense_date_to DATE;
p_raisedby   VARCHAR2(80);
p_status   VARCHAR2(80);
p_ordered_by   VARCHAR2(80);
--RETURN VARCHAR2;
END;
--THE BODY...
REATE OR REPLACE PACKAGE BODY Subixclt IS
FUNCTION BeforeReportTrigger RETURN VARCHAR2 IS
BEGIN
Fnd_File.PUT_LINE(Fnd_File.LOG,'L_ORDERED_by'||L_ORDERED_BY);
DECLARE
L_ORDERED_BY VARCHAR2(50);
P_ORDERED_BY  VARCHAR2(50);
P_RAISEDBY VARCHAR2(50);
P_STATUS VARCHAR2(50);
P_CLAIMANT VARCHAR2(100);
P_EXPENSE_DATE_FROM DATE;
--P_EXPENSE_DATE_FROM  VARCHAR2(50);
--P_EXPENSE_DATE_TO  VARCHAR2(50);
P_EXPENSE_DATE_TO DATE;
BEGIN
IF (P_ORDERED_BY='Expense Report Number') THEN
     L_ORDERED_BY :='order by 1 asc;';
  ELSIF (P_ORDERED_BY='Person Claiming') THEN
     L_ORDERED_BY :='order by 2 asc;';
  ELSIF (P_ORDERED_BY='Submit Date') THEN
  L_ORDERED_BY :='order by 4 asc;';
  END IF;
RETURN(L_ORDERED_BY);
--RETURN NULL;
END;
END;
END;Many thanks for looking..
D

Answer 1

Thanks for the suggestion. I initially didnt have the RETURN TRUE after every IF statement and have since removed the 'WHEN OTHERS' section but I'm still getting the same error message. If its to be believed, doesn't it sound like its not finding any of the 3 possible parameter entries available? This can't be so, I've checked the ConC Program parameter name is correct, and the value set linked to it only has available the 3 options where I make the choice..
Body now reads:
CREATE OR REPLACE PACKAGE BODY Subixclt
AS
FUNCTION BEFOREREP (P_ORDERED_BY IN VARCHAR2)RETURN BOOLEAN IS
BEGIN
--FND_FILE.PUT_LINE(FND_FILE.LOG,'L_ORDERED_by'||L_ORDERED_BY);
DECLARE
L_ORDERED_BY VARCHAR2(50);
--P_RAISEDBY VARCHAR2(50);
--P_STATUS VARCHAR2(50);
--P_CLAIMANT VARCHAR2(100);
--P_EXPENSE_DATE_FROM DATE;
--P_EXPENSE_DATE_TO DATE;
BEGIN
IF (P_ORDERED_BY='Expense Report Number') THEN
     L_ORDERED_BY :='order by 1 asc;';
  ELSIF (P_ORDERED_BY='Person Claiming') THEN
     L_ORDERED_BY :='order by 2 asc;';
  ELSIF (P_ORDERED_BY='Submit Date') THEN
  L_ORDERED_BY :='order by 4 asc;';
  RETURN TRUE;
  END IF;
-- EXCEPTION WHEN OTHERS THEN RETURN FALSE;
--RETURN(L_ORDERED_BY);
END;
END;
END;error log reads:
XDO Data Engine Version No: 5.6.3
Resp: 20707
Org ID : 102
Request ID: 2484872
All Parameters: p_raisedby=SUSAN HOLLIDAY:p_status=:p_claimant=:p_expense_date_from=:p_expense_date_to=:P_ORDERED_BY=Person Claiming
Data Template Code: SUBIXCLT
Data Template Application Short Name: PO
Debug Flag: N
{p_claimant=, p_expense_date_to=, p_status=, p_raisedby=SUSAN HOLLIDAY, p_expense_date_from=, P_ORDERED_BY=Person Claiming}
Calling XDO Data Engine...
[061110_114425280][][STATEMENT] Start process Data
[061110_114425282][][STATEMENT] Process Data ...
[061110_114425284][][STATEMENT] Executing data triggers...
[061110_114425284][][STATEMENT] BEGIN
SUBIXCLT.p_claimant := :p_claimant ;
SUBIXCLT.p_expense_date_from := :p_expense_date_from ;
SUBIXCLT.p_expense_date_to := :p_expense_date_to ;
SUBIXCLT.p_raisedby := :p_raisedby ;
SUBIXCLT.p_status := :p_status ;
SUBIXCLT.p_ordered_by := :p_ordered_by ;
:XDO_OUT_PARAMETER := 1;
END;
[061110_114425287][][STATEMENT] 1: :
[061110_114425287][][STATEMENT] 2:null :
[061110_114425287][][STATEMENT] 3:null :
[061110_114425288][][STATEMENT] 4:SUSAN HOLLIDAY :
[061110_114425288][][STATEMENT] 5: :
[061110_114425288][][STATEMENT] 6:null :
[061110_114425291][][STATEMENT] Executing data triggers...
[061110_114425292][][STATEMENT] Declare
l_flag Boolean;
BEGIN
l_flag := SUBIXCLT.beforerep(:p_ordered_by) ;
if (l_flag) then
:XDO_OUT_PARAMETER := 1;
end if;
end;
[061110_114425293][][STATEMENT] 1:null :
[061110_114425302][][EXCEPTION] SQLException encounter while executing data trigger....
java.sql.SQLException: ORA-06503: PL/SQL: Function returned without value
ORA-06512: at "APPS.SUBIXCLT", line 27
ORA-06512: at line 4Many thanks for staying with this..
S