Source group adjustments in v16.161
Clark Wilkins, Simplexable
2018.01.30
<p>A situation has been noted that required refinement to our source group accounting system. To recap the basics:</p>

<ul>
	<li>A source group is one or more jobs that capture all aspects of a group of parts acquired for inventory.</li>
	<li>The aggregate of all expenses on these jobs is the cost of the group.</li>
	<li>The software calculates a transfer for each item billed, <b>in chronological billing order</b>, at the full amount billed.</li>
	<li>This amount reduces the inventory value until it reaches zero.</li>
	<li>The calculation is triggered automatically by certain events, and can also be forced from the metadata section.</li>
</ul>

<p>The situation that has arisen is a sale <i>inside the transfer window</i> which later has some credits issued. Since the source group tool takes the value out at full cost, we need to reset it for the credit amount if appropriate. (This might not be desirable for a group with no outside investors, but if you are doing back-charging for credits, you <b>really</b> need this correction.)</p>

<p>In the metadata, you can now enter a value (greater than zero) for credits you want compensated. The system will include this amount in the starting group value and thus offset the credit amount. For example, an item was sold for $1000 and the date means this was accounted for in the transfers. However, the item was credited in full later on and you want this amount <b>excluded</b> because the company received nothing. Add $1000 to the offset value and the transfer is effectively nulled out by raising the total group value by a compensating amount.</p>

<p>It's probably a good idea to use the accompanying notes field to record <i>why</i> you are doing this.</p>