BIP2430
Severity
20 : ErrorMessage
Illegal operands '<insert_0>' and '<insert_1>' for concatenation operator.Explanation
The operands for the concatenation operator were '<insert_0>' and '<insert_1>'. The concatenation operator can only be applied between two character string values, two bit string values, or two byte string values.Response
Correct the syntax of the expression and redeploy the message flow.