Solving the TikTok Shop & Shopify Connection Headache: Stalling at 3/8 & RPC Errors

Hey everyone! It's your friendly Shopify expert here, diving into the nitty-gritty of what’s happening in the community forums. Lately, a particular issue has been popping up that's causing a lot of frustration for store owners trying to link up their Shopify stores with TikTok Shop. We’re talking about that dreaded moment when the connection process just… stalls. Specifically, at the '3/8 completed' mark. Ouch.

I recently followed a thread started by NestHomeMarket, who was at their wit's end after trying to connect their TikTok Shop to Shopify over 25 times. Can you imagine the frustration? They’d gone through all the standard troubleshooting steps: uninstalling and reinstalling the app, disabling all browser extensions in Chrome and Edge, even trying incognito mode. Their credentials for both platforms were set identically, but still, the process would consistently freeze at 3/8. If this sounds familiar, you're definitely not alone.

Understanding the Connection Challenge

When NestHomeMarket initially posted, some community members, like vicky32, chimed in saying their own connection was smooth sailing. This kind of feedback, while sometimes frustrating for the person struggling, actually tells us something important: it's not a universal bug affecting everyone. For many, the integration works exactly as expected. This suggests the issue is often specific to an account, a region, or a particular backend configuration rather than a widespread platform outage.

Another user, lorenzo_store1, asked for NestHomeMarket's store link to get a better look, which is a common and helpful diagnostic step in the forums. NestHomeMarket promptly shared their store, nesthomemarket.com.

The Critical Clue: An RPC Call Error

This is where the thread took a crucial turn and provided the real insight. After many attempts, NestHomeMarket dug deeper and found a specific error message that appeared at the beginning of the connection attempt. This is gold, folks! If you're experiencing a similar issue, getting this exact error message is your first and most important step to finding a solution.

The error message NestHomeMarket shared was:

“rpc call error, underlying err: RPCError{PSM:[ad.platform.commerce_partner_gw] Method:[MakeHTTPCall] ErrType:[RPC_FAILED] OriginalErr:[remote or network error[remote]: biz error: Error 1105: psm/db/finger/keyword throttled] BizStatusCode:[0] BizStatusMessage: } copy log info”

Now, that's a mouthful of technical jargon, but let's break down the important bits. The key phrase here is Error 1105: psm/db/finger/keyword throttled. This indicates that the connection is failing because TikTok's internal systems are 'throttling' or limiting the requests coming from NestHomeMarket's account. Think of it like a bouncer at a club letting too many people in – they stop letting more in for a bit. In this case, it's likely an automated system on TikTok's side preventing the full connection from being established.

The AI's Advice and the Reality of Support

NestHomeMarket wisely consulted Copilot AI, which suggested a path forward: "To resolve this, I will need to reach out to TikTok Seller Support so their technical team can adjust the backend flags for your account or migrate your integration to the new Seller Center API." This is a solid diagnosis! It points directly to a server-side configuration issue on TikTok's end, not a problem with Shopify or your browser.

However, as many of us know, dealing with first-line support for highly technical issues can be challenging. NestHomeMarket experienced this firsthand, reporting that multiple agents on seller-us.tiktok.com didn't have a clue what was going on. They opened a ticket on May 2nd and still hadn't received a real answer. This highlights a common pain point: getting past the initial support level to someone who understands the deeper technical problem.

What to Do When Your TikTok Shop Connection Stalls at 3/8

Based on NestHomeMarket's experience and the insights from the community, here's an action plan if you hit this 3/8 wall:

1. Rule Out the Basics (Again): Even if you've tried, quickly re-verify these steps to be absolutely sure they're not contributing:
   • Clear your browser's cache and cookies.
   • Try connecting using a different browser (Chrome, Edge, Safari, Firefox).
   • Attempt the connection in an incognito or private browsing window.
   • Temporarily disable all browser extensions.
   • Double-check that your Shopify admin and TikTok Seller Center credentials are correct and match any required details.
2. Capture the Error Message: This is paramount. If you see *any* error message, copy it verbatim. The more technical detail, the better. Look for phrases like "rpc call error" or specific error codes like "Error 1105."
3. Contact TikTok Seller Support – Be Specific: This is where you need to be persistent and precise.
   • When you open a ticket or chat with an agent on seller-us.tiktok.com, don't just say "it's not connecting."
   • Provide the full error message you copied.
   • Specifically mention that you suspect your account is encountering "Error 1105: psm/db/finger/keyword throttled" and that, according to diagnostics, their "technical team may need to adjust backend flags for your account or migrate your integration to the new Seller Center API."
   • Insist on escalation. If the first agent seems unhelpful or doesn't understand, politely but firmly ask for your ticket to be escalated to their technical or engineering team. Explain that it's a backend configuration issue, not a user-side problem.
4. Follow Up Relentlessly: As NestHomeMarket found, getting a resolution can take time and persistence. Keep track of your ticket number and follow up regularly until you get a substantive response or a fix.

This situation is a classic example of how deep technical issues can sometimes hide behind simple 'stalling' messages. It's not always a quick fix you can do yourself, but by providing TikTok's support team with the right technical language and pushing for escalation, you significantly increase your chances of getting to the root of the problem. Keep that detailed error message handy, and don't give up!