答えは、この API メソッドを使用することです
https://zohocrmapi.wiki.zoho.com/getFields.html
目的
getFields メソッドを使用して、特定のモジュールで使用可能なフィールドの詳細を取得できます。
リクエスト URL
XML: https://crm.zoho.com/crm/private/xml/Tasks/getFields?authtoken=AuthToken&scope=crmapi
JSON: https://crm.zoho.com/crm/private/json/Tasks/getFields?authtoken=AuthToken&scope=crmapi
サンプル応答
<Leads>
<section name="Lead Information" dv="Lead Information">
<FL req="false" type="Lookup" isreadonly="false" maxlength="120" label="Lead Owner" dv="Lead Owner" customfield="false" />
<FL req="true" type="Text" isreadonly="false" maxlength="100" label="Company" dv="Company" customfield="false" />
<FL req="false" type="Text" isreadonly="false" maxlength="40" label="First Name" dv="First Name" customfield="false" />
<FL req="true" type="Text" isreadonly="false" maxlength="80" label="Last Name" dv="Last Name" customfield="false" />
<FL req="false" type="Text" isreadonly="false" maxlength="100" label="Designation" dv="Title" customfield="false" />
<FL req="false" type="Email" isreadonly="false" maxlength="100" label="Email" dv="Email" customfield="false" />
<FL req="false" type="Phone" isreadonly="false" maxlength="30" label="Phone" dv="Phone" customfield="false" />
<FL req="false" type="Text" isreadonly="false" maxlength="30" label="Fax" dv="Fax" customfield="false" />
<FL req="false" type="Phone" isreadonly="false" maxlength="30" label="Mobile" dv="Mobile" customfield="false" />
<FL req="false" type="Website" isreadonly="false" maxlength="120" label="Website" dv="Website" customfield="false" />
...
<section name="Address Information" dv="Address Information">
<FL req="false" type="Text" isreadonly="false" maxlength="250" label="Street" dv="Street" customfield="false" />
<FL req="false" type="Text" isreadonly="false" maxlength="30" label="City" dv="City" customfield="false" />
<FL req="false" type="Text" isreadonly="false" maxlength="30" label="State" dv="State" customfield="false" />
<FL req="false" type="Text" isreadonly="false" maxlength="30" label="Zip Code" dv="Zip Code" customfield="false" />
<FL req="false" type="Text" isreadonly="false" maxlength="30" label="Country" dv="Country" customfield="false" />
</section>
<section name="Description Information" dv="Description Information">
<FL req="false" type="TextArea" isreadonly="false" maxlength="32000" label="Description" dv="Description" customfield="false" />
</section>
</Leads>
要素FL[@label='Lead Source']は、私が探していた結果です:
<FL req="false" type="Pick List" isreadonly="false" maxlength="120" label="Lead Source" dv="Lead Source" customfield="false">
<val>-None-</val>
<val default="true">Advertisement</val>
<val>Cold Call</val>
<val>Employee Referral</val>
<val>External Referral</val>
<val>OnlineStore</val>
<val>Partner</val>
<val>Public Relations</val>
<val>Sales Mail Alias</val>
<val>Seminar Partner</val>
<val>Seminar-Internal</val>
<val>Trade Show</val>
<val>Web Download</val>
<val>Web Research</val>
<val>4444</val>
</FL>
問題は、PickupList フィールドを持たないオブジェクトでこのメソッドをテストしたことであり、定義のみを返すが、使用可能な値は返さないと判断しました。