-20410 THE NUMBER OF CHILDREN NODES OF AN XML NODE IN AN XML VALUE HAS EXCEEDED THE LIMIT NUMBER OF CHILDREN NODES

Explanation
An expression generated an XML value with an XML node that has a number
of children nodes. This number exceeds the limit of 2³² -1 children nodes.

System action
The XQuery expression cannot be processed.

Programmer response
Rewrite the expression generating the XML value such that the number of
children nodes does not exceed the limit.

SQLSTATE
560CH