Custom trial period for plan not working when creating subscription through API

Custom trial period for plan not working when creating subscription through API

I'm trying to set a custom trial period when creating subscription using API (POST /subscriptions)
This is my payload:
  1.             'customer_id' => 'xxxxxxx',
                'plan' => [
                    'plan_code' => 'xxxxx',
                    'setup_fee' => 120,
                    'trial_days' => 15
                ],
                'auto_collect' => false,
Subscription is created, but last billing date is set to today, instead of today+15 days:

  1.   "created_at" => "2021-03-14"
      "activated_at" => "2021-03-14"
      "current_term_starts_at" => "2021-03-14"
      "current_term_ends_at" => "2021-04-14"
      "last_billing_at" => "2021-03-14"
      "next_billing_at" => "2021-04-14"
Also invoice is created and includes both setup fee and full price of the plan.

Expected behavior would be:
- subscription is created
- invoice for setup fee only should be generated
- after trial period expires (2021-03-14 + 15 days), invoice is generated for full plan price
- next billing periods will be counted from the end of trial period (e.g. 2021-03-29, 2021-04-29, etc.)

    Access your files securely from anywhere

        Zoho Developer Community

            Bootcamp
            Community
            Pricing
            Webinars
            What's New
            Integrations
            Contact Support
            Contact Sales

              Zoho Survey Resources
                Features
                Survey Templates
                Integrations
                Community
                iOS Mobile Surveys
                Pricing
                Android Mobile Surveys
                Insurvey Blogs
                Insight Blogs
                Tips & Tricks





                              Latest Feature Updates


                                  Zoho Desk Resources

                                  • Desk Community Learning Series


                                  • Digest


                                  • Functions


                                  • Meetups


                                  • Kbase


                                  • Resources


                                  • Glossary


                                  • Desk Marketplace


                                  • MVP Corner


                                  • Word of the Day




                                      Zoho Marketing Automation
                                        Zoho SalesIQ Resources

                                              • Sticky Posts

                                              • Zoho Billing will discontinue support for older browser versions soon

                                                Hello users, Starting from May 15, 2024, Zoho Billing will no longer support the following browser versions: Browsers Version Restrictions Firefox Browser Versions older than 100 Google Chrome Versions older than 100 Microsoft Edge Versions older than

                                              • Introducing Developer Space in Zoho Subscriptions

                                                Hello devs! At Zoho Subscriptions, we're constantly looking for ways to empower the developer community. Our goal is to provide you with the tools you need to integrate Zoho Subscriptions with your other platforms, and we also want to make it easy to


                                              Manage your brands on social media
                                              Access Zoho Social

                                                Zoho Pagesense Resources


                                                    Zoho TeamInbox Resources

                                                      Zoho DataPrep Resources



                                                        Zoho CRM Plus Resources

                                                          Zoho Books Resources


                                                            Zoho Subscriptions Resources

                                                              Zoho Projects Resources


                                                                Zoho Sprints Resources


                                                                  Qntrl Resources


                                                                    Zoho Creator Resources



                                                                        Zoho Campaigns Resources


                                                                          Zoho CRM Resources

                                                                          • CRM Community Learning Series

                                                                            CRM Community Learning Series


                                                                          • Kaizen

                                                                            Kaizen

                                                                          • Functions

                                                                            Functions

                                                                          • Meetups

                                                                            Meetups

                                                                          • Kbase

                                                                            Kbase

                                                                          • Resources

                                                                            Resources

                                                                          • Digest

                                                                            Digest

                                                                          • CRM Marketplace

                                                                            CRM Marketplace

                                                                          • MVP Corner

                                                                            MVP Corner





                                                                              Design. Discuss. Deliver.

                                                                              Create visually engaging stories with Zoho Show.

                                                                              Get Started Now