feat: fetching of qty as per received qty from PR to PI

[AfshanKhan]

Added a checkbox "Consider Rejected Quantity For Purchase Invoice" in Buying Settings.

Purpose

Consider following Purchase Receipt.

When the checkbox is checked the Purchase Invoice from the above Purchase Receipt will consider Received Qty as Accepted Qty for Total Qty.

When the checkbox is not checked the Purchase Invoice from the above Purchase Receipt will consider Accepted Qty as Accepted Qty for Total Qty.

Documentation PR: frappe/erpnext_documentation#355

[coveralls]

Coverage decreased (-0.04%) to 42.758% when pulling e1dcfef on AfshanKhan:consider-rejected-quantity-for-purchase-invoice into da66cef on frappe:develop.

[nextchamp-saqib]

Unhandled case,

• Purchase Receipt of 10 received qty, 2 rejected qty
• Create Purchase Invoice with 5 accepted qty
• Create another Invoice it will fetch accepted qty as 10, instead, it should have been 5

You can check the previous behaviour by unchecking the consider_rejected_quantity_for_purchase_invoice checkbox

[AfshanKhan]

Unhandled case,

• Purchase Receipt of 10 received qty, 2 rejected qty
• Create Purchase Invoice with 5 accepted qty
• Create another Invoice it will fetch accepted qty as 10, instead, it should have been 5

You can check the previous behaviour by unchecking the consider_rejected_quantity_for_purchase_invoice checkbox

Added the fix for this

[nextchamp-saqib]

Another Case to fix:

• Purchase Receipt created for 10 received qty, 8 accepted qty, 2 rejected qty
• Trying to create a return using Create -> Purchase Return button, change received qty to -4, and accepted qty to -4, then saved & submit the return
• Now create an Invoice against the original receipt, the qty is fetched as 10 and the invoice can be submitted too.
• If you submit the invoice, the billed amount is for 10 qty while it shouldn't have been possible to bill amount more than 10 - returned qty = 6 qty

P.S: This case is handled if consider_rejected_quantity_for_purchase_invoice is unchecked

[AfshanKhan]

Another Case to fix:

• Purchase Receipt created for 10 received qty, 8 accepted qty, 2 rejected qty
• Trying to create a return using Create -> Purchase Return button, change received qty to -4, and accepted qty to -4, then saved & submit the return
• Now create an Invoice against the original receipt, the qty is fetched as 10 and the invoice can be submitted too.
• If you submit the invoice, the billed amount is for 10 qty while it shouldn't have been possible to bill amount more than 10 - returned qty = 6 qty

P.S: This case is handled if consider_rejected_quantity_for_purchase_invoice is unchecked

Fixed

[nextchamp-saqib]

@AfshanKhan You can backport now on version-13-hotfix