Custom Field
A custom field allows you to create a customized field to track extra characteristics and attributes of a record. Custom field object allows you to perform the following operations:
- Retrieve a specific custom field or a list of custom fields
- Create a custom field
- Update a custom field
- Delete a custom field
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The Custom Field Object
asterisk denotes required| Name | Description | Format | Attributes |
|---|---|---|---|
| label | Name of the custom field | string | MaxLength = 50 Filterable, Sortable |
| createdById | Identifier of the user who created this object | uuid | Filterable |
| createdOn | Date and time when this object was created (UTC Now), in ISO 8601 date-time format, such as YYYY-MM-DDThh:mm:ss | date-time | Filterable, Sortable |
| customListId | Identifier of the linked custom list if the custom field is of type drop-down | uuid | |
| definitionId | Identifier of the custom field assigned to a module | uuid | Filterable |
| description | Represents the description of the custom field | string | MaxLength = 100 |
| id | Object identifier | uuid | Filterable |
| lastUpdated | Last updated date and time value of this object in ISO 8601 date-time format, such as YYYY-MM-DDThh:mm:ss | date-time | Filterable, Sortable |
| lastUpdatedById | Identifier of the user who last updated this object | uuid | Filterable |
| length | Number of characters allowed in a custom field | int32 | |
| module | Represents the module to which a custom field can be assigned, e.g., activity, client, employee, etc. | CustomFieldModule Enumerated type: Click to see possible values and their descriptions. | Filterable |
| objectState | Represents the state of the object. e.g., new, unchanged, modified or deleted | ObjectState Enumerated type: Click to see possible values and their descriptions. | |
| token | Represents the token for update operations | int32 | |
| type | Represents the data type of custom field, e.g., text, date, etc. | CustomFieldType Enumerated type: Click to see possible values and their descriptions. | |
| version | Implements concurrency on this object | byte |
Custom Field List
Use this method to retrieve a list of custom fields. You can optionally pass where, orderBy, and page as query parameters to filter the result. Use the fields parameter to request a subset of the model. By default, a complete model is returned.
Request URL
Method Overview
HTTP Method:
GET
Content Type:
application/json
Response Format:
json
Requires Authentication?
Yes
Headers:
Module:
Custom Field
Required Scopes:
read:core
Required Subscription:
View Subscription
Request Parameters asterisk denotes required
| Name | Parameter Type | Description | Format |
|---|---|---|---|
| fields | Query | Specifies the model properties you want in the response body | string |
| where | Query | Specifies only those records that match an expression in the query | string |
| orderBy | Query | Specifies the order of the records | string |
| page | Query | Specifies the page number and number of records on each page | string |
| expand | Query | string |
Response Body
| Name | Description | Format |
|---|---|---|
| label | Name of the custom field | string |
| createdById | Identifier of the user who created this object | uuid |
| createdOn | Date and time when this object was created (UTC Now), in ISO 8601 date-time format, such as YYYY-MM-DDThh:mm:ss | date-time |
| customListId | Identifier of the linked custom list if the custom field is of type drop-down | uuid |
| definitionId | Identifier of the custom field assigned to a module | uuid |
| description | Represents the description of the custom field | string |
| id | Object identifier | uuid |
| lastUpdated | Last updated date and time value of this object in ISO 8601 date-time format, such as YYYY-MM-DDThh:mm:ss | date-time |
| lastUpdatedById | Identifier of the user who last updated this object | uuid |
| length | Number of characters allowed in a custom field | int32 |
| module | Represents the module to which a custom field can be assigned, e.g., activity, client, employee, etc. | CustomFieldModuleEnumerated type: Click to see possible values and their descriptions. |
| objectState | Represents the state of the object. e.g., new, unchanged, modified or deleted | ObjectStateEnumerated type: Click to see possible values and their descriptions. |
| token | Represents the token for update operations | int32 |
| type | Represents the data type of custom field, e.g., text, date, etc. | CustomFieldTypeEnumerated type: Click to see possible values and their descriptions. |
| version | Implements concurrency on this object | byte |
[
{
"label": "label",
"createdById": "0a809529-a213-4c44-a94e-dc2874b7843c",
"createdOn": "2026-04-22T10:11:57Z",
"customListId": "479068bd-7e01-4c45-8339-de64d3cad5cd",
"definitionId": "71ec4129-862e-4f58-b7cc-d67fc7b4098d",
"description": "AssignedCustomField Description",
"id": "1d56bdbe-96f3-4398-ba89-7a6ae384d440",
"lastUpdated": "2026-04-22T10:11:57Z",
"lastUpdatedById": "46115ceb-446f-4a09-a59a-70adb315c1d9",
"length": 0,
"module": null,
"objectState": null,
"token": 0,
"type": null,
"version": "U3dhZ2dlciByb2Nrcw=="
}
]Retrieve a Custom Field
Use this method to retrieve a specific custom field. Pass id as the parameter.
Request URL
Method Overview
HTTP Method:
GET
Content Type:
application/json
Response Format:
json
Requires Authentication?
Yes
Headers:
Module:
Custom Field
Required Scopes:
read:core
Required Subscription:
View Subscription
Request Parameters asterisk denotes required
| Name | Parameter Type | Description | Format |
|---|---|---|---|
| id | Path | Custom field identifier | string |
Response Body
| Name | Description | Format |
|---|---|---|
| label | Name of the custom field | string |
| createdById | Identifier of the user who created this object | uuid |
| createdOn | Date and time when this object was created (UTC Now), in ISO 8601 date-time format, such as YYYY-MM-DDThh:mm:ss | date-time |
| customListId | Identifier of the linked custom list if the custom field is of type drop-down | uuid |
| description | Represents the description of the custom field | string |
| id | Object identifier | uuid |
| lastUpdated | Last updated date and time value of this object in ISO 8601 date-time format, such as YYYY-MM-DDThh:mm:ss | date-time |
| lastUpdatedById | Identifier of the user who last updated this object | uuid |
| length | Number of characters allowed in a custom field | int32 |
| objectState | Represents the state of the object. e.g., new, unchanged, modified or deleted | ObjectStateEnumerated type: Click to see possible values and their descriptions. |
| token | Represents the token for update operations | int32 |
| type | Represents the data type of custom field, e.g., text, date, etc. | CustomFieldTypeEnumerated type: Click to see possible values and their descriptions. |
| version | Implements concurrency on this object | byte |
{
"label": "label",
"createdById": "43834f02-31be-43fd-92fc-b12159230c99",
"createdOn": "2026-04-22T10:11:57Z",
"customListId": "6a4b04bc-2213-4b67-b5a5-e47d248c9ac7",
"description": "CustomField Description",
"id": "62493e78-0667-4814-941b-0f6aabfea69c",
"lastUpdated": "2026-04-22T10:11:57Z",
"lastUpdatedById": "4da6ba72-2c23-4e41-92ca-25de5661aa06",
"length": 0,
"objectState": null,
"token": 0,
"type": null,
"version": "U3dhZ2dlciByb2Nrcw=="
}Create a Custom Field
Use this method to save a custom field. Pass custom field as the parameter.
Request URL
Method Overview
HTTP Method:
POST
Content Type:
application/json
Response Format:
json
Requires Authentication?
Yes
Headers:
Module:
Custom Field
Required Scopes:
readwrite:core
Required Subscription:
View Subscription
Request Parameters asterisk denotes required
| Name | Parameter Type | Description | Format |
|---|---|---|---|
| body | Body | Custom field object | CustomField |
Response Body
| Name | Description | Format |
|---|---|---|
| label | Name of the custom field | string |
| createdById | Identifier of the user who created this object | uuid |
| createdOn | Date and time when this object was created (UTC Now), in ISO 8601 date-time format, such as YYYY-MM-DDThh:mm:ss | date-time |
| customListId | Identifier of the linked custom list if the custom field is of type drop-down | uuid |
| description | Represents the description of the custom field | string |
| id | Object identifier | uuid |
| lastUpdated | Last updated date and time value of this object in ISO 8601 date-time format, such as YYYY-MM-DDThh:mm:ss | date-time |
| lastUpdatedById | Identifier of the user who last updated this object | uuid |
| length | Number of characters allowed in a custom field | int32 |
| objectState | Represents the state of the object. e.g., new, unchanged, modified or deleted | ObjectStateEnumerated type: Click to see possible values and their descriptions. |
| token | Represents the token for update operations | int32 |
| type | Represents the data type of custom field, e.g., text, date, etc. | CustomFieldTypeEnumerated type: Click to see possible values and their descriptions. |
| version | Implements concurrency on this object | byte |
{
"label": "label",
"createdById": "061c994a-ad1e-4d97-a9e4-6319fdde7ba7",
"createdOn": "2026-04-22T10:11:57Z",
"customListId": "a411f429-befc-4262-b49d-5f070048551e",
"description": "CustomField Description",
"id": "4db07aab-dad5-4801-959a-d607028bb869",
"lastUpdated": "2026-04-22T10:11:57Z",
"lastUpdatedById": "6684990f-850e-41f6-a1c4-aa50567473a8",
"length": 0,
"objectState": null,
"token": 0,
"type": null,
"version": "U3dhZ2dlciByb2Nrcw=="
}Create a Custom Field List
Use this method to save multiple custom fields. Pass model as the parameter.
As saving multiple records in a batch takes time, this endpoint returns a Job object that shows the progress of the batch operation. To check the status of the operation at any time, use the job endpoint.
Request URL
Method Overview
HTTP Method:
POST
Content Type:
application/json
Response Format:
json
Requires Authentication?
Yes
Headers:
Module:
Custom Field
Required Scopes:
readwrite:core
Required Subscription:
View Subscription
Request Parameters asterisk denotes required
| Name | Parameter Type | Description | Format |
|---|---|---|---|
| body | Body | Custom field object | CustomFieldBatchRequest |
Response Body
| Name | Description | Format |
|---|---|---|
| batchSize | Represents the number of entities in a batch | int64 |
| createdById | Identifier of the user who created this object | uuid |
| createdOn | Date and time when this object was created (UTC Now), in ISO 8601 date-time format, such as YYYY-MM-DDThh:mm:ss | date-time |
| id | Object identifier | uuid |
| lastUpdated | Last updated date and time value of this object in ISO 8601 date-time format, such as YYYY-MM-DDThh:mm:ss | date-time |
| lastUpdatedById | Identifier of the user who last updated this object | uuid |
| objectState | Represents the state of the object. e.g., new, unchanged, modified or deleted | ObjectStateEnumerated type: Click to see possible values and their descriptions. |
| progress | Represents the total number of entities processed | int64 |
| status | Represents the status of a job e.g., ready, running, completed, or terminated | string |
| token | Represents the token for update operations | int32 |
| type | Represents the type of a job e.g., create, update, or delete | string |
| version | Implements concurrency on this object | byte |
{
"batchSize": 0,
"createdById": "8ed548bb-85de-4539-ba25-74d3f06a6bfc",
"createdOn": "2026-04-22T10:11:57Z",
"id": "a86687fe-7f70-400e-9895-6f1cb4ab1451",
"lastUpdated": "2026-04-22T10:11:57Z",
"lastUpdatedById": "9b2ab17d-ff71-4047-aa3b-8517f4bb2a77",
"objectState": null,
"progress": 0,
"status": "status",
"token": 0,
"type": "type",
"version": "U3dhZ2dlciByb2Nrcw=="
}Create a Custom Field Assign
Use this method to assign multiple custom fields to a module.
Request URL
Method Overview
HTTP Method:
POST
Content Type:
application/json
Response Format:
json
Requires Authentication?
Yes
Headers:
Module:
Custom Field
Required Scopes:
readwrite:core
Required Subscription:
View Subscription
Request Parameters asterisk denotes required
| Name | Parameter Type | Description | Format |
|---|---|---|---|
| body | Body | Custom field object | AssignCustomField |
Create a Custom Field Unassign
Use this method to remove a custom field from a module.
Request URL
Method Overview
HTTP Method:
POST
Content Type:
application/json
Response Format:
json
Requires Authentication?
Yes
Headers:
Module:
Custom Field
Required Scopes:
readwrite:core
Required Subscription:
View Subscription
Request Parameters asterisk denotes required
| Name | Parameter Type | Description | Format |
|---|---|---|---|
| body | Body | Custom field object | UnAssignCustomField |
Update a Custom Field
Use this method to update a specific custom field. Pass id as the parameter.
Request URL
Method Overview
HTTP Method:
PUT
Content Type:
application/json
Response Format:
json
Requires Authentication?
Yes
Headers:
Module:
Custom Field
Required Scopes:
readwrite:core
Required Subscription:
View Subscription
Request Parameters asterisk denotes required
| Name | Parameter Type | Description | Format |
|---|---|---|---|
| id | Path | Custom field identifier | string |
| body | Body | Custom field object | CustomField |
Response Body
| Name | Description | Format |
|---|
{
"label": "label",
"createdById": "aa60fa95-843a-4718-af02-7209a4155412",
"createdOn": "2026-04-22T10:11:57Z",
"customListId": "b8c1c49c-d618-4950-b11e-b1c31e5ffbf5",
"description": "CustomField Description",
"id": "d341a84d-2e2d-4d4a-a025-f4703fe16e4a",
"lastUpdated": "2026-04-22T10:11:57Z",
"lastUpdatedById": "085f7150-e4c9-4d3c-811e-9b168f645255",
"length": 0,
"objectState": null,
"token": 0,
"type": null,
"version": "U3dhZ2dlciByb2Nrcw=="
}Delete a Custom Field
Use this method to delete a custom field. Pass id as the parameter. You can only delete a custom field if it is not assigned to any module.
Request URL
Method Overview
HTTP Method:
DELETE
Content Type:
application/json
Response Format:
N/A
Requires Authentication?
Yes
Headers:
Required Scopes:
readwrite:core
Required Subscription:
View Subscription
Request Parameters asterisk denotes required
| Name | Parameter Type | Description | Format |
|---|---|---|---|
| id | Path | Custom field identifier | string |
Patch a Custom Field
Use this method to perform partial modifications to a custom field. Pass id and patch document as parameters.
Request URL
Method Overview
HTTP Method:
PATCH
Content Type:
application/json
Response Format:
json
Requires Authentication?
Yes
Headers:
Module:
Custom Field
Required Scopes:
readwrite:core
Required Subscription:
View Subscription
Request Parameters asterisk denotes required
| Name | Parameter Type | Description | Format |
|---|---|---|---|
| id | Path | Custom field identifier | string |
| body | Body | A document containing an array of objects with each object representing a single operation | CustomFieldPatchDocument |
Response Body
| Name | Description | Format |
|---|