How to populate form data after LOV search on primary key

Question

This is the description:
Pg. 1 contains an item defined as P1_CUSTOMER_ID (Popup Key LOV (Displays description, returns key value) with the list of values definition:
select
last_name || ' , ' || first_name display_value, cust_num return_value from customers order by 1
Pg. 1 contains a button defined as P1_FIND_NOW (Redirect) with a URL redirect to Pg. 4.
Pg. 1 contains a branch defined as Go To Page 4 (after processing), branch point = On Submit: After processing, action = page in this application, When Button Pressed = P1_FIND_NOW
Pg. 4 contains two regions with multiple items, for example P4_ADDRESS_1, Display as Text Field (disabled, does not save state), Source Used = Always, replacing any existing value in session state, Source Type = Database column, Source value = ADDRESS_1
Pg. 4 contains a process (before region) defined as POPULATE_CUST_INFO, Process point = On load, before region, Process error message = Customer could not be found, Source process =
BEGIN
SELECT
CUSTOMERS.FIRST_NAME,CUSTOMERS.LAST_NAME,CUSTOMERS.BIRTH_DATE,
CUSTOMERS.SEX,CUSTOMERS.MARITAL_STATUS,CUSTOMERS.PHONE_NUMBER_V,
CUSTOMERS.PHONE_NUMBER_M, CUSTOMERS.ADDRESS_1,CUSTOMERS.ADDRESS_2,
CUSTOMERS.ADDRESS_3,CUSTOMERS.CITY_NAME,CUSTOMERS.STATE_CODE,
CUSTOMERS.ZIP_CODE,CUSTOMERS.COUNTRY_CODE
INTO
:P4_FIRST_NAME,:P4_LAST_NAME,:P4_DOB,:P4_GENDER,:P4_MARITAL_STATUS,
:P4_VOICE,:P4_MOBILE,:P4_ADDRESS_1,:P4_ADDRESS_2,:P4_ADDRESS_3,
:P4_CITY_NAME,:P4_STATE_CODE,:P4_ZIP_CODE,:P4_COUNTRY_CODE
FROM CUSTOMERS
WHERE :P1_CUST_ID = CUSTOMERS.CUST_NUM;
END;
I am getting the pop-up LOV and selecting a customer from the LOV, then clicking the FIND NOW button. This redirects to Pg. 4 where I expect to see all the data for the selected Customer populated into the various text fields (name, address, etc.). What is actually happening is I'm being redirected to Pg. 4 but
the Process error message = Customer could not be found is displaying.
If I run the same Source process query within SQL, I get a screen to
enter bind variables, I enter an existing customer number (e.g.Y0001), and I get the message:
ORA-06502: PL/SQL: numeric or value error
The primary key for the CUSTOMERS table is CUST_NUM varchar2(17)

Answer 1

Your message refers to "P1_CUSTOMER_ID" and "P1_CUST_ID". Is that a typo in the message? If not, perhaps that's the problem.
Rodney