I am a compliance analyst at a major bank and we are implementing a new high-security wire transfer process. We are using a custom Data Action in Architect to call an external Voice Biometrics API. The goal is to verify the caller’s identity before the transfer is authorized. However, the Data Action is consistently failing with a ‘JSON Parse Error’ when it receives the response from the biometrics provider. The API response contains several nested objects and an array of match confidence scores. How do I configure the Data Action’s Translation Map to correctly parse this complex JSON response so I can use the ‘Match Result’ in my Architect flow?
Hey! I have seen this a lot in my operations director role. Complex API responses from security vendors can be very tricky for Data Actions. Usually, the ‘JSON Parse Error’ means that your ‘Translation Map’ does not perfectly match the structure of the incoming data. You should use a tool like JSONPath Online Evaluator to test your expressions against a sample response from your biometrics provider. Make sure you are using the correct dot-notation for nested objects, and if you are looking for a specific value in an array, ensure you are using the [0] index if you only need the top result.
Good afternoon. I maintain over fifty flows and I deal with complex Data Actions daily. For biometric integrations, the response often includes metadata that can confuse the standard Translation Map. My recommendation is to use the ‘Response Template’ to simplify the JSON before it hits Architect. You can use Velocity Macros (#if, #foreach) within the Data Action to extract only the ‘Match Result’ and ‘Confidence Score’ and return them as top-level strings. This makes the variable mapping in Architect much cleaner and significantly reduces the chance of those annoying parse errors!
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nah, velocity is a bit heavy for this. i’ve been wrestling with nested json in data actions all morning. the parse error usually isn’t the structure, it’s the data types. if the biometrics api sends a confidence score as 0.95 but your translation map expects a string, architect chokes.
try stripping the response down to the bare minimum in the translation map. don’t try to parse the whole object. just grab the specific fields you need.
{
"verification_status": "$.result.status",
"confidence_score": "$.result.score.toString()"
}
also, check if the api is returning a 204 or empty body on failure. architect hates that. i hit this same wall with a fraud detection api last week. the fix was adding a fallback in the translation map to return a default string if the path doesn’t exist. saves the flow from crashing.
{
"verification_status": "${#if ($.result.status) $.result.status : 'UNKNOWN'}"
}
it’s ugly but it works.
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thanks, that was it. the confidence score was coming back as a float but the mapping expected a string. switched the type to string in the translation map and it parsed fine now.
"confidenceScore": {
"value": "{{body.matchConfidence}}",
"type": "string"
}
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