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MISSING_GROUP_BY — grouped-stats request supplied no groupBy dimension

cyoda-go version 0.8.4

MISSING_GROUP_BY — the grouped-statistics request omitted groupBy, or sent it as an empty array.

HTTP: 400 Bad Request. Retryable: no.

Raised by POST /api/entity/stats/{entityName}/{modelVersion}/query. groupBy is required and must carry at least one dimension: the endpoint returns one bucket per distinct group key, and there is no reading of the request that groups by nothing.

Supply at least one entry — either the reserved token state (lifecycle state) or a scalar JSONPath into the payload, such as $.country. For an ungrouped count of a model’s entities, use the model statistics endpoint instead.

  • errors
  • crud
  • errors.DUPLICATE_GROUP_BY
  • errors.INVALID_GROUP_BY_PATH
  • cyoda help errors — Every error response from the Cyoda REST API carries a structured errorCode in the properties object. Multiple codes may share the same HTTP status. Programmatic handling keys on errorCode, not HTTP status.
  • cyoda help crud — Entities are instances of models. Each entity has a UUID, a model reference (entityName, modelVersion), and a lifecycle state managed by the workflow engine. Creating an entity requires the referenced model to be in LOCKED state. All write operations run within a Cyoda transaction and return a transactionId alongside the affected entity IDs.
  • cyoda help errors DUPLICATE_GROUP_BY — Raised by POST /api/entity/stats/{entityName}/{modelVersion}/query. The reserved token state appearing twice, or the same JSONPath appearing twice, is rejected rather than deduplicated: a repeated dimension adds a second copy of the same value to every bucket’s groupKey and changes nothing about the grouping, so it is more likely a mistake in the request than an intent.
  • cyoda help errors INVALID_GROUP_BY_PATH — Raised by POST /api/entity/stats/{entityName}/{modelVersion}/query. Every groupBy entry other than state must match the wire JSONPath grammar — a required $. leader followed by dot-separated segments of ASCII letters, digits, _ and -: