BIP2910
Severity
20 : Error
Message
(<insert_1>, <insert_2>) : SELECT list item must be a scalar
Explanation
The SELECT clause of a SELECT statement contains an item which could be a list. This cannot be used with the column functions: SUM, MAX or MIN.
Response
Correct the syntax of your ESQL expression in node <insert_1>, around line and column <insert_2>, then redeploy the message flow.