When creating a new app (from issue appl), If SOS_PRODUCT_DATA.BEHAVIOR of application = '02'(Recurring Product)
=> Enable the user to input data in textbox of Ref No.1
=> Display red asterisk on right of wording "Ref No.1: ", e.g. "Ref No.1: *"
When creating a new app (from issue appl), If SOS_PRODUCT_DATA.BEHAVIOR '02'
=> Disable a textbox of Ref No.1 and display application number.
When viewing an exist apps (from app enquiry)
=> Disable a textbox of Ref No.1 and display SOS_APPL_PAYMENT.PAYMENT_REF1 WHERE APPL_NO = 'Application No.'.
* Need to validate null value of Ref No.1
=> If it's null -> The system must be show warning message (Retrieve message from DB -> Please create sql script for add new message in SOS_PARAMETER_DATA, PARAM_GROUP = 'MS_ACT_LOG')
* Anyway, Don't want to clear value of Ref No.1
=> It should always show value in textbox of Ref No.1 (see detail in my comment below)