create_custom_field
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Define a new custom field on a billing entity type (project, task, subtask, time report, or customer) for your organization. The organization is fixed by your context - never pass an organization id. type is one of String, Number, Date, DateTime, ListOfValues; ListOfValues requires at least one option. Marking a field mandatory blocks creating that entity type until a value is provided.
Input schema
| Property | Type | Required | Description |
|---|---|---|---|
| entity | string | yes | The entity type this field is defined on (required). One of: billing_projects, billing_tasks, billing_sub_tasks, sub_tasks_time_reports, billing_customers. |
| field_id | string | yes | A unique, stable key for the field (required, max 50 chars), e.g. "po_number". |
| title | string | yes | Human-readable label shown in the UI (required). |
| type | string | yes | Field data type (required). One of: String, Number, Date, DateTime, ListOfValues. |
| list_of_values | array | no | Options for a ListOfValues field (required for that type; at least one non-blank option). |
| is_mandatory | boolean | no | Whether a value is required when creating/updating the entity. Defaults to false. |
| idempotency_key | string | no | Optional caller-supplied key; retrying with the same key returns the original result instead of acting twice. |
Raw JSON schema
{
"type": "object",
"properties": {
"entity": {
"type": "string",
"description": "The entity type this field is defined on (required). One of: billing_projects, billing_tasks, billing_sub_tasks, sub_tasks_time_reports, billing_customers.",
"enum": [
"billing_projects",
"billing_tasks",
"billing_sub_tasks",
"sub_tasks_time_reports",
"billing_customers"
]
},
"field_id": {
"type": "string",
"description": "A unique, stable key for the field (required, max 50 chars), e.g. \"po_number\"."
},
"title": {
"type": "string",
"description": "Human-readable label shown in the UI (required)."
},
"type": {
"type": "string",
"description": "Field data type (required). One of: String, Number, Date, DateTime, ListOfValues.",
"enum": [
"String",
"Number",
"Date",
"DateTime",
"ListOfValues"
]
},
"list_of_values": {
"type": "array",
"description": "Options for a ListOfValues field (required for that type; at least one non-blank option).",
"items": {
"type": "string"
}
},
"is_mandatory": {
"type": "boolean",
"description": "Whether a value is required when creating/updating the entity. Defaults to false."
},
"idempotency_key": {
"type": "string",
"description": "Optional caller-supplied key; retrying with the same key returns the original result instead of acting twice."
}
},
"required": [
"entity",
"field_id",
"title",
"type"
]
}