CPI/HCI error when using any node function in mapping "Mapping contains incomplete expressions"

[#1]

Hello Technical Experts,

I am getting mapping error when using any node functions in the mapping, error say "Mapping Contains Incomplete Expressions". For source mapping fields I have imported 3 XSD's which were referenced inside the main XSD. Without node function I am able to simulate the mapping with output. below is the shared screenshot of the source context to just give an idea that source data is hierarchical in nature. Any suggestion will be highly appreciated.

[suchita]

SAP helped to resolve the issue, we had to flatten multiple xsd into one wsdl.