# WhatsApp Business API for Bitrix24: Installation and sending the first message.

# Step by step instruction

1\. Go to Bitrix24 Market (1)

<figure id="bkmrk-">![](https://bookstack-support-u7942.vm.elestio.app/uploads/images/gallery/2026-03/embedded-image-n17tzo8a.png)</figure>2\. Click on the “Search” field and type “whatsapp” (1). Find our app “WhatsApp Business API” (2) and click on it.

<figure id="bkmrk--1">![](https://bookstack-support-u7942.vm.elestio.app/uploads/images/gallery/2026-03/embedded-image-lhzcrhfq.png)</figure>3\. In the appeared window check the correct developer - ChatArchitect.com (1) and click the “Install” button

<figure id="bkmrk--2">![](https://bookstack-support-u7942.vm.elestio.app/uploads/images/gallery/2026-03/embedded-image-jvbzv9da.png)</figure>4\. Follow the instructions (1) to get your App ID and App Secret keys. When done press the button (2)

<figure id="bkmrk--3">![](https://bookstack-support-u7942.vm.elestio.app/uploads/images/gallery/2026-03/embedded-image-9dantt1p.png)</figure>5\. Press the “Connect” button (1)

NOTE: In very rare cases you wouldn’t see this window. If you face this situation please go to step 6 and then return to step 5

<figure id="bkmrk--4">![](https://bookstack-support-u7942.vm.elestio.app/uploads/images/gallery/2026-03/embedded-image-vsatugfb.png)</figure>5.1 Enter your “App ID” (1) then enter your “App Secret” (2), and press the “Save” button (3)

NOTE: To get these keys write to our "Customer's Support WhatsApp chat": [https://wa.me/421233221242](https://wa.me/421233221242) ;

<figure id="bkmrk--5">![](https://bookstack-support-u7942.vm.elestio.app/uploads/images/gallery/2026-03/embedded-image-jicqtpzu.png)</figure>5.2 Congratulations! You can write your first message from WhatsApp to your WhatsApp Business API number

<figure id="bkmrk--6">![](https://bookstack-support-u7942.vm.elestio.app/uploads/images/gallery/2026-03/embedded-image-d6eavand.png)</figure>6\. Optional: If you somehow managed to skip steps 5-5.2 or can’t find “Contact center” in your menu to complete app connection then follow the next steps:

6.1 Find the “Search” field in the header (1) type “contact” then choose “Contact center” in the search results (2)

NOTE: Step 6.1 is an optional Step and must be skipped if steps 5-5.2 are done!

<figure id="bkmrk--7">![](https://bookstack-support-u7942.vm.elestio.app/uploads/images/gallery/2026-03/embedded-image-yrvztxsz.png)</figure>6.2 In the “Contact center” section click on the WhatsApp tile (1) IMPORTANT: Green icon with the blue stroke!

NOTE: Step 6.2 is an optional Step and must be skipped if steps 5-5.2 are done!

<figure id="bkmrk--8">![](https://bookstack-support-u7942.vm.elestio.app/uploads/images/gallery/2026-03/embedded-image-y1g9o6cp.png)</figure>7\. Write your first message from WhatsApp to your WhatsApp Business API number. When you do it Bitrix24 should show you a popup with the message (1). To go into chats you can click this popup or press the “View open channel chat” button (2)

<figure id="bkmrk--9">![](https://bookstack-support-u7942.vm.elestio.app/uploads/images/gallery/2026-03/embedded-image-xubfxumc.png)</figure>7.1 In the opened chat window click the “Reply” button (1) and write your answer

<figure id="bkmrk--10">![](https://bookstack-support-u7942.vm.elestio.app/uploads/images/gallery/2026-03/embedded-image-rjhqesee.png)</figure>