-16022 OPERANDS OF TYPES `xquery-data-types` ARE NOT VALID FOR OPERATOR `operator-name` . ERROR QNAME = `err:XPTY0004`

Explanation
 One or both operands of the operator have invalid
data types. The following situations might cause this error:  The types of the operands are not a valid combination for the
given operator. For example, the operands of an arithmetic operator
are not of numeric types. Or a comparison operator compares xs:string
with xs:integer. 
One or both operands of an arithmetic operator are a sequence
of more than one items, but the given operator requires single item
operands. The notation (item(), item()+) represents the type of a
sequence of more than one item.
The content sequence of a document node constructor (e.g XMLDOCUMENT)
cannot contain attribute nodes.

System action
 The XQuery expression cannot be processed.

Programmer response
 Use operands that have the correct types
for the operator.

SQLSTATE
 10507

-16022 OPERANDS OF TYPES xquery-data-types ARE NOT VALID FOR OPERATOR operator-name . ERROR QNAME = err:XPTY0004

Explanation

System action

Programmer response

SQLSTATE

-16022 OPERANDS OF TYPES `xquery-data-types` ARE NOT VALID FOR OPERATOR `operator-name` . ERROR QNAME = `err:XPTY0004`