3765125 - Error "Unknown function: property.PropertyName" in filter step after Camel 3.x upgrade

After a Cloud Integration tenant is upgraded to Apache Camel 3.x, integration flow processing fails at a Filter step using an XPath or Simple expression that references exchange properties using the property. prefix.

The following error appears in the message processing log:

org.apache.camel.language.simple.types.SimpleIllegalSyntaxException: Unknown function: property.PropertyName at location 0 ${property.PropertyName}

After consulting KBA 3383659 and changing the property name to lowercase, the error persists with a different variant:

org.apache.camel.language.simple.types.SimpleIllegalSyntaxException: Unknown function: property.propertyname at location 0 ${property.propertyname},
cause: org.apache.camel.language.simple.types.SimpleParserException: Unknown function: property.propertyname

The issue occurs regardless of the casing used with the property. prefix. Any integration flow that references exchange properties using ${property.PropertyName} syntax in a Filter step is affected after the Camel 3.x migration.

SAP Integration Suite

exchangeProperty, property, SimpleIllegalSyntaxException, SimpleParserException, Unknown function, filter step, Camel 3.x, Camel upgrade, expression, XPath, Simple expression, at location 0, integration flow, Cloud Integration, CPI, Camel migration, property prefix , KBA , LOD-HCI-PI-WT-IFL , Integration Designer , Problem