Hello everyone! I'm new to Apache Nifi and I'm trying to get some data from a database (db1), perform a lookup using another another database (db2) and then loading this new data into a redshift. The problem is that my LookUp Process fails.   The incoming data from the db1 looks like the following:   { transacition_id: 123 customer_id: 321 amount: U$10.0 }  On the db2 I have this: { pk_customer: 001 src_sys_key: 321 customer_name: "example" } What I would like to do is get the pk_customer from the db2 by matching customer_id with src_sys_key. The current Nifi flow:   LookupRecord settings:   And finally the LookupService (Database Record Lookup):   Getting the following error:   Can anyone help me, please? Thank you in advance! ... View more