@Michelle Xue If you are interested I can send you the original generated code that was failing on upload through filecabinet. The string assembly error for example happens when I do this:

configRecord.getValue({
     fieldId: "custrecord_" + config.client.id + "_host"
})

it claims that fieldId needs to be defined. I even put that string assembly before

getValue

call and did typeof and log the result to make sure that it is a valid string. Same result. Had to use a search to load that single record to retrieve my custom fields with dynamic field name assembly