0043694: The discount and promotion Buy X and pay Y (3X2) is not working fine using ungrouped product product.

Notes
(0119049) samuel_nicuesa (developer) 2020-04-07 12:35	Added video https://drive.google.com/file/d/1sshjqzf4JuxvKLoSHMDn_2AtFqCbtL-l/view?usp=sharing [^]

(0119330) marvintm (manager) 2020-04-22 12:22	There are several things to consider here: - First, some discount rules which apply to multiple lines allow to distribute the discount over the lines, and some don't. This is related to the implementation of each rule. Implementing this feature in any of the rules which currently doesn't have it would be a separate feature request. - Second, distributing the discount over the lines doesn't necessarily mean that functionally, the ability to return one line which has a discount which also applies to other lines would be correct. This is quite easy to see with an example: if we had a pack of Table+Chair (individual prices of 100 and 100, pack price of 150), by purchasing both, the customer would pay 150. The discount would be applied proportionally, so each line would be 75. If later on the customer returns a line, it means that even though the discount is applied proportionally, the customer still would pay 75 for just a Table, and most probably this is not what the Store wants, as the customer has effectively purchased only a Table, and should have paid 100 instead. So this is a more general issue, due to how discounts are applied on the lines, and how verified returns work. A possible solution would be to prevent the customer from selecting only one line that was affected by a discount if this discount also affected other lines. So, in the previous example, the customer would not be able to return the table or chair individually, but would have to return both. This would be a different feature request, that could be implemented, but would also need to be optional most probably as some customers might want this to behave differently. In the end, there is no perfect solution. Depending on the customer needs, we would need to report the appropriate feature request and implement it.

Issue History
Date Modified	Username	Field	Change
2020-04-07 12:34	samuel_nicuesa	New Issue
2020-04-07 12:34	samuel_nicuesa	Assigned To	=> Retail
2020-04-07 12:34	samuel_nicuesa	Resolution time	=> 1588024800
2020-04-07 12:34	samuel_nicuesa	Triggers an Emergency Pack	=> No
2020-04-07 12:35	samuel_nicuesa	Note Added: 0119049
2020-04-07 12:36	samuel_nicuesa	File Added: Discount3x2.png
2020-04-22 12:22	marvintm	Review Assigned To	=> marvintm
2020-04-22 12:22	marvintm	Note Added: 0119330
2020-04-22 12:22	marvintm	Status	new => closed
2020-04-22 12:22	marvintm	Resolution	open => invalid
2020-04-29 12:22	ngarcia	Relationship added	related to 0043900