Serial is consumed inside of transaction block when transaction fails

bugs
1

Let’s have a workflow with transaction behaviour Ignore and let’s have an atomic transaction block inside of it. Let’s perform following transformation inside the block:

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0"
	xmlns:AS="http://schema.advantages.cz/AsapFunctions"
	xmlns:date="http://exslt.org/dates-and-times" exclude-result-prefixes="AS date">

	<xsl:template match="/">
		<Test
			Id="{AS:GenerateId()}"
			Serial="{AS:GenerateSerial('INVOICE')}"
			Lookup="{AS:LookupValue('fb264a02-2308-4e80-b789-cd40da44b7c1', '')}"/>
	</xsl:template>
</xsl:stylesheet>

The attribute Serial consumes counter, but attribute Lookup causes failure because there’s no value provided to lookup. As a result the workflow fails, but the counter remains incremented.

I’d expect counter to not be consumed.

3

An observation

The problem happens only in this specific setup. If the workflow transaction behaviour is InheritExisting, the counter is not consumed.