# Misc Trade functions

List of miscellaneous functions added to Trade area (Sales and Purchases).

<table border="1" id="bkmrk-symbol-description-w" style="border-collapse: collapse; width: 100%; height: 491.55px;"><colgroup><col style="width: 21.57%;"></col><col style="width: 78.534%;"></col></colgroup><tbody><tr style="height: 29.6727px;"><td style="height: 29.6727px;">W1TR004A</td><td style="height: 29.6727px;">Unavailability reason codes (track missing quantities with a reason code)</td></tr><tr><td>W1TR005A</td><td>Do not recalculate unit price/cost for shipment/receipt (while changing the invoiced quantity)</td></tr><tr><td>W1TR007A</td><td>Do not ship/receive zero quantity</td></tr><tr><td>W1TR009A</td><td>Allow negative discount</td></tr><tr><td>W1TR010A</td><td>Vendor Item No. in prices</td></tr><tr><td>W1TR012A</td><td>"Line description" in Posting Group</td></tr><tr><td>W1TR013A</td><td>Location code in Copy Document</td></tr></tbody></table>

## Payment balance per customer/vendor o category

Function `W1TR006A` allows to set balancing account in payment methods for specific customers, vendors or group within "Payment Setup" page.

[![image.png](https://kb.brayns.it/uploads/images/gallery/2025-05/scaled-1680-/KTQimage.png)](https://kb.brayns.it/uploads/images/gallery/2025-05/KTQimage.png)

## Allowed dates for sales &amp; purchases

The functions `W1TR008A` allows to specify allowed dates for sales or purchases.

[![image.png](https://kb.brayns.it/uploads/images/gallery/2025-05/scaled-1680-/FrRimage.png)](https://kb.brayns.it/uploads/images/gallery/2025-05/FrRimage.png)