JSON array vs object (shape mismatch) Playbook

JSON array vs object (shape mismatch). Actionable remediation checklist with tool links and relevant guides.

TL;DR: Validate -> locate exact failing spot -> fix the minimal part -> re-validate.

Execution steps

  1. Validate input locally. Start with a validator or parser-friendly converter.
  2. Locate root cause. Use line/position/error token to isolate one failing place.
  3. Apply a minimal fix. Do not refactor all content at once.
  4. Re-validate and continue. Once clean, convert/export safely.

Recommended tools

Relevant guides

Auto-selected from existing guides for this topic. Need more: search by keyword.

JSON to CSV requires an array of objects: quick checks

JSON-to-CSV converters typically require a JSON array of objects. Learn how to verify the top-level shape and convert safely in your browser (no upload).

Cannot deserialize value of type `java.util.ArrayList` from Object value (token `JsonToken.START_OBJECT`): what it means and how to fix it

Jackson value mismatch: ArrayList from START_OBJECT. Align DTO type with payload shape and validate locally (no upload).

json: cannot unmarshal array into Go value of type []int: what it means and how to fix it

Go json.Unmarshal mismatch: cannot unmarshal array into Go type []int. Fix shape/type alignment fast (no upload).

json: cannot unmarshal array into Go value of type bool: what it means and how to fix it

Go json.Unmarshal mismatch: cannot unmarshal array into Go type bool. Fix shape/type alignment fast (no upload).

json: cannot unmarshal object into Go value of type []int: what it means and how to fix it

Go json.Unmarshal mismatch: cannot unmarshal object into Go type []int. Fix shape/type alignment fast (no upload).

json: cannot unmarshal array into Go value of type int64: what it means and how to fix it

Go json.Unmarshal mismatch: cannot unmarshal array into Go type int64. Fix shape/type alignment fast (no upload).

json: cannot unmarshal object into Go value of type bool: what it means and how to fix it

Go json.Unmarshal mismatch: cannot unmarshal object into Go type bool. Fix shape/type alignment fast (no upload).

json: cannot unmarshal array into Go value of type []string: what it means and how to fix it

Go json.Unmarshal mismatch: cannot unmarshal array into Go type []string. Fix shape/type alignment fast (no upload).

Related actions

Related playbooks

Related by intent

Expert signal

Expert note: JSON array vs object (shape mismatch) usually resolves fastest when triage starts from strict validation and then branches to comparison/alternative paths based on input quality.

Data snapshot 2026

MetricValue
Intent confidence score85/100
Predicted CTR uplift potential43%
Target crawl depth< 4 clicks

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