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I agree. If not, the sales quotation sent to close the deal with your customer will differ from your invoice. This can lead to: - some delays in payments: some customers have automated systems or even catch the slightest opportunity not to pay on time. - some questions: "why your software is not able to send the same?" - discrepancies with external softwares (in China for example there is an official machine to print the invoices in official paper) This problem is not only restricted to UoS but more generally to prices. Typically, I have a customer, they sale with 4 digits sales prices and the accounting decimal precision is 2 digits (used for price in invoices): we had to develop a specific module to add a new "account Line" decimal precision. http://apps.openerp.com/addon/6658?filter=%7B%22order_by%22%3A+%22click_counter+desc%22%2C+%22text_search%22%3A+%22decimal%22%7D&page=0 Additionally, because sales and purchased prices are the same object with 2 rules, the current used system is not coherent for the same reasons: eg: - Sales prices accuracy = 3 - Purchase price accuracy = 4 - Account accuracy = 2 How do create a proper sales invoice (dp=2) that matches the quotation (dp=3) and the supplier invoice (dp=2) with the PO (dp=4) In short, we should have a simple rule: "All calculations in invoices and sales quotation and PO should be identical" To solve this I dont think having duplicated the invoice_line objects are needed, as 99% of the information is common (only difference in my opinion is price). Nevertheless, we should separate sales prices and purchases price in the invoices and treat them in separate fields in account_incoice_line: - supplier invoice: use purchase price dp for a field purchase_price. - Sales invoice: use Sales price dp for a field sale_price. Additionally, we should choose a coherent and consistent calculation method for invoices. eg: - in customer and supplier invoices, sales order and PO: use no digits constraint in calculation for subtotals and truncate the total after according to account dp. - consistently use UoM dp between sales quotation/PO/invoices. - use same rules for taxes calculations. There have been an interesting mail some time ago from Graeme Gellatly with deeper researches on calculation scheme that could be investigated. Collateral problem: standard cost dp should be issued as well: currently is used "account" dp for standard cost and this is not enough for the same reasons stated above (purchase price is 4 digits and accounting is 2) Best regards
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