BIP2434
Severity
20 : Error
Message
(<insert_1>, <insert_2>) : <insert_5> field index expression does not evaluate to INTEGER value; <insert_3> evaluates to <insert_4>.
Explanation
A field index must be an INTEGER value. The expression <insert_3> evaluates to a value of type <insert_4>.
Response
Correct the syntax of your ESQL expression in node <insert_1>, around line and column <insert_2>, then redeploy the message flow: Ensure that only expressions evaluating to INTEGER values are used to designate field indexes with <insert_5>.