new script (invoice)requirement urgnet...

Hi All,

I need help on this script,i am developing the first script So i need

help on how to start a script.how to write external subroutines, and how to fetch data to layout.how to write print program?

here i mention the requirement .

<b>requirement</b>

<b>Business Functionality</b>

Printing of the pro-forma invoice is needed to be sent to the customer after the sales order document and purchase order document are created and before the actual delivery and invoicing of the export sales order is done.

Major Features

The pro-forma invoice should include the following in the header section:

-company name and address

- Sales order information

- Bill-to customer information

- Ship-to customer information

- Delivery information

The pro-forma invoice should include the following in the item section:

- Quantity

- Product ID and description

- Line weight in pounds

- Country of origin

- Unit discount

- Unit price

- Total price

The pro-forma invoice sorted by category, by brand and finally in alphabetical order in terms of description.

The pro-forma invoice should include the following in the totals section:

- Subtotal (Total price)

- Applicable taxes

- Quantity allowance discount, if any

- Freight amount

- Total amount of the invoice

The pro-forma invoice should contain, in the last page, some hard-coded text as detailed in the attached form layout.

User Procedures

Describe the user procedures required.

Check Lists

Describe the checklists required.

Restart/Recovery Strategy

Identify the strategy to be used for restart and recovery needs.

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Thnks

Arnald.