> For the complete documentation index, see [llms.txt](https://selenium-4.gitbook.io/nexus-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://selenium-4.gitbook.io/nexus-docs/documentation/public-reference-data-management/operations/main-3.md).

# Retrieve Economic Activity Classifications

## Retrieve Economic Activity Classifications

> Returns the reference data directory of economic activity classifications, grouped by CAE section.

```json
{"openapi":"3.0.3","info":{"title":"NEXUS Banking Services API","version":"1.0.0"},"tags":[{"name":"public-reference-data-management"}],"servers":[{"url":"https://sandbox.nexus.selenium.ao","description":"Sandbox"},{"url":"https://api-mock.selenium.ao","description":"Mock"}],"security":[{"bearerAuth":[]}],"components":{"securitySchemes":{"bearerAuth":{"type":"http","scheme":"bearer","description":"Bearer Token (OAuth2 / OIDC or JWT) passed in the `Authorization` header."}},"schemas":{"EconomicActivityDetail":{"type":"object","description":"A single economic activity classification (CAE) entry.","properties":{"EconomicActivityCode":{"type":"string","description":"Code of the economic activity."},"EconomicActivityDescription":{"type":"string","description":"Description of the economic activity."}}},"ErrorEnvelope":{"type":"object","properties":{"error":{"$ref":"#/components/schemas/Error"}}},"Error":{"type":"object","required":["status","reason","message","path"],"properties":{"status":{"type":"integer","description":"HTTP status code of the error."},"reason":{"type":"string","description":"High-level error category code."},"message":{"type":"string","description":"Human-readable description of the problem."},"path":{"type":"string","description":"HTTP method and endpoint path that originated the error."},"errordetail":{"type":"array","description":"Detailed error list. May be absent for generic errors (e.g. 500).","items":{"$ref":"#/components/schemas/ErrorDetail"}}}},"ErrorDetail":{"type":"object","properties":{"code":{"type":"string","description":"Domain-specific error code."},"reason":{"type":"string","description":"Textual identifier of the specific cause."},"message":{"type":"string","description":"Detailed message, with concrete values where applicable."}}}},"responses":{"Unauthorized":{"description":"Missing, expired or invalid Bearer Token.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/ErrorEnvelope"}}}},"InternalServerError":{"description":"Unexpected internal error.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/ErrorEnvelope"}}}}}},"paths":{"/v1/public-reference-data-management/reference-data/economic-activities/retrieve":{"get":{"summary":"Retrieve Economic Activity Classifications","description":"Returns the reference data directory of economic activity classifications, grouped by CAE section.","tags":["public-reference-data-management"],"operationId":"retrieveEconomicActivityClassifications","responses":{"200":{"description":"Economic activity classification reference data.","content":{"application/json":{"schema":{"type":"object","properties":{"ReferenceDataDirectoryRecord":{"type":"object","description":"Root object of the reference data record.","properties":{"ReferenceDataType":{"type":"string","description":"Type of reference data. Fixed value `Economic Activities`."},"ReferenceDataDirectoryEntryRecord":{"type":"array","description":"List of economic activity classification entries, grouped by CAE section.","items":{"type":"object","properties":{"ReferenceDataEntryReference":{"type":"string","description":"Either a CAE section identifier or an individual activity code, depending on the source grouping."},"ReferenceDataEntryDetails":{"description":"A single activity object when the entry represents an individual code, or an array of activity objects when the entry represents a CAE section.","oneOf":[{"$ref":"#/components/schemas/EconomicActivityDetail"},{"type":"array","items":{"$ref":"#/components/schemas/EconomicActivityDetail"}}]}}}}}}}}}}},"401":{"$ref":"#/components/responses/Unauthorized"},"500":{"$ref":"#/components/responses/InternalServerError"}}}}}}
```


---

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## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation by asking a question.

Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:

```
GET https://selenium-4.gitbook.io/nexus-docs/documentation/public-reference-data-management/operations/main-3.md?ask=<question>&goal=<user_goal>
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