Integration that gets a document that's in base64

Hello,

I'm calling a Google Gmail API to get the attachments of an email, with an Integration. The attachment comes in a form of a base64 document inside the body:

"body": {
    "size": 1111,
    "data": "base64_document_here"
}

I tried to get an attachment with 12KB (around 12k characters) and it works great...

until I use the "Convert base64 values to Appian documents" checkbox:

I've also tried to get a smaller attachment and it seems to be working just fine:

I think it may have to do with Appian trying to convert the JSON into a CDT first, which looks like it's limiting the size to 4000 characters, and then decoding the base64, but I'm not sure.

Has anyone ever had this problem before?

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