> For the complete documentation index, see [llms.txt](https://help.openloyalty.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.openloyalty.io/api-reference/custom-field-group/partially-update-a-custom-field-group.md).
# Partially update a custom field group
Management\
\
Updates only the provided fields of a custom field group. Omitted fields are left unchanged.
````json
{"openapi":"3.0.0","info":{"title":"Open Loyalty","version":"0.0.1"},"tags":[{"name":"Custom Field Group","description":"These endpoints allow you to manage custom field groups and their definitions."}],"servers":[{"url":"http://openloyalty.localhost"}],"security":[{"Bearer":[]},{"token":[]}],"components":{"securitySchemes":{"Bearer":{"type":"http","description":"Open Loyalty has the JWT authorization.\nTo learn what a JSON Web Token is and how it works, check out Introduction to JSON Web Tokens \n\n### Obtain an access token\n\nSend a request with the parameters username and password\n\n#### Definition\n\n`POST /api/admin/login_check` [Go to definition](#operation/adminLoginCheck)\\\n`POST /api/{storeCode}/member/login_check` [Go to definition](#operation/memberLoginCheck)\n\n#### Example\n\n```bash\ncurl {HOST}/api/admin/login_check\n -H 'Content-Type: application/json;charset=UTF-8'\n -H 'Accept: application/json, text/plain, */*'\n --data-binary '{\"username\":\"admin\",\"password\":\"password\"}'\n```\n\n#### Example Response\n\n```json\n{\n \"token\":\"eyJhbGciOiJSUzI1NiIsInR5cCI6...\",\n \"refresh_token\":\"0558f8bb29948c4e54c443f...\"\n}\n```\n\n### Using JSON Web Token\n\nAdd authorization header to each request\\\n`Authorization: Bearer eyJhbGciOiJSUzI1NiIsInR5cCI6...`\\\nYou can now access any API method you want under the /api prefix.\n\n#### Example\n```bash\ncurl {HOST}/api/{storeCode}/analytics/members\n -H 'Accept: application/json'\n -H 'Content-type: application/x-www-form-urlencoded'\n -H 'Authorization: Bearer eyJhbGciOiJSUzI1NiIsInR5cCI6...'\n```\n\n### Refresh JSON Web Token\nYou can refresh token using refresh_token that was given during login.\\\nThere are two endpoints\\\nTo refresh admin token `POST /api/token/refresh` [Go to definition](#operation/tokenRefresh)\\\nTo refresh member token `POST /api/{storeCode}/token/refresh` [Go to definition](#operation/tokenRefreshMember)\n","bearerFormat":"JWT","scheme":"bearer"},"token":{"type":"apiKey","name":"X-AUTH-TOKEN","in":"header"}},"parameters":{"storeCode":{"name":"storeCode","in":"path","description":"Store code","required":true,"schema":{"type":"string"}}},"schemas":{"CustomFieldEntityType":{"type":"string","description":"Entity type the custom field is associated with.","enum":["member","direct-campaign","automation-campaign","referral-campaign","leaderboard","challenge","reward","fortune-wheel-reward"]},"PatchCustomFieldGroupRequest":{"type":"object","additionalProperties":false,"properties":{"name":{"type":"string","description":"Human-readable name of the group","maxLength":255},"description":{"type":"string","nullable":true,"description":"Optional description of the group","maxLength":1000},"sortOrder":{"type":"integer","nullable":true,"description":"Display order position"},"definitions":{"type":"array","items":{"$ref":"#/components/schemas/DefinitionRequest"},"description":"Updated field definitions (replaces existing definitions if provided)"}}},"DefinitionRequest":{"type":"object","required":["key","name","fieldType"],"properties":{"key":{"type":"string","description":"Immutable machine-readable identifier. Cannot be changed after creation.","maxLength":128},"name":{"type":"string","description":"Human-readable name of the field.","maxLength":255},"description":{"type":"string","nullable":true,"description":"Optional description.","maxLength":1000},"fieldType":{"$ref":"#/components/schemas/CustomFieldType"},"required":{"type":"boolean","description":"Whether this field must be filled in.","default":false},"active":{"type":"boolean","description":"Whether this field is active. Inactive fields reject value writes (400) and\nare omitted from the member-details read response, but remain visible in the\nmanagement definitions list so they can be reactivated.\n","default":true},"sortOrder":{"type":"integer","nullable":true,"description":"Display order position."},"config":{"type":"object","additionalProperties":true,"description":"Field-type-specific configuration. Structure depends on `fieldType`.\nSee `TextFieldConfig`, `IntegerFieldConfig`, `FloatFieldConfig`,\n`BooleanFieldConfig`, `DateFieldConfig`, `DateTimeFieldConfig`, `SelectFieldConfig` for the per-type shapes.\nValidated server-side against the schema selected by the sibling `fieldType`.\n"}}},"CustomFieldType":{"type":"string","description":"Type of the custom field value. Determines the allowed JSON type and the shape\nof `config` on the definition.\n\n| Type | Value JSON type | Config required field |\n|-----------------|--------------------------|--------------------------|\n| `text` | string | `maxLength` |\n| `integer` | integer | — |\n| `float` | number | — |\n| `boolean` | boolean | — |\n| `date` | string (YYYY-MM-DD) | — |\n| `datetime` | string (YYYY-MM-DD HH:mm:ss.SSSSSS) | — |\n| `single_select` | string | `groupOfValuesId` |\n| `multi_select` | array of strings | `groupOfValuesId` |\n| `object_array` | array of objects / null | `objectFields`, `maxItems` |\n","enum":["text","integer","float","boolean","date","datetime","single_select","multi_select","object_array"]},"ExpiredToken":{"required":["code","message"],"properties":{"code":{"type":"string"},"message":{"type":"string"}},"type":"object"},"InvalidToken":{"required":["code","message"],"properties":{"code":{"type":"string"},"message":{"type":"string"}},"type":"object"},"Unauthorized":{"required":["code","message"],"properties":{"code":{"type":"integer"},"message":{"type":"string"}},"type":"object"}},"responses":{"NoContent":{"description":"Success. No content."},"BadRequest":{"description":"Bad request.","content":{"application/json":{"schema":{"required":["code","message","errors"],"properties":{"code":{"type":"integer"},"message":{"type":"string"},"errors":{"type":"array","items":{"required":["message","parameters","plural","code","path"],"properties":{"message":{"type":"string"},"parameters":{},"plural":{"type":"integer","nullable":true},"code":{"type":"string"},"path":{"type":"string"}},"type":"object"}}},"type":"object"}}}},"AccessDenied":{"description":"Forbidden.","content":{"application/json":{"schema":{"required":["code","message"],"properties":{"code":{"type":"integer"},"message":{"type":"string"}},"type":"object"}}}},"NotFound":{"description":"Not found.","content":{"application/json":{"schema":{"required":["code","message"],"properties":{"code":{"type":"integer"},"message":{"type":"string"}},"type":"object"}}}}}},"paths":{"/api/{storeCode}/custom-field-groups/{entityType}/{groupKey}":{"patch":{"operationId":"_customFieldGroupUpdate","tags":["Custom Field Group"],"summary":"Partially update a custom field group","description":"
\nUpdates only the provided fields of a custom field group.\nOmitted fields are left unchanged.\n","parameters":[{"$ref":"#/components/parameters/storeCode"},{"name":"entityType","in":"path","required":true,"description":"Entity type","schema":{"$ref":"#/components/schemas/CustomFieldEntityType"}},{"name":"groupKey","in":"path","required":true,"description":"Group key","schema":{"type":"string"}}],"requestBody":{"required":true,"content":{"application/json":{"schema":{"type":"object","required":["customFieldGroup"],"properties":{"customFieldGroup":{"$ref":"#/components/schemas/PatchCustomFieldGroupRequest"}}}}}},"responses":{"204":{"$ref":"#/components/responses/NoContent"},"400":{"$ref":"#/components/responses/BadRequest"},"401":{"description":"Unauthorized","content":{"application/json":{"schema":{"oneOf":[{"$ref":"#/components/schemas/ExpiredToken"},{"$ref":"#/components/schemas/InvalidToken"},{"$ref":"#/components/schemas/Unauthorized"}]}}}},"403":{"$ref":"#/components/responses/AccessDenied"},"404":{"$ref":"#/components/responses/NotFound"}}}}}}
````
---
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