# 💡How to resolve GTIN Error? 🤔

1. First, click on the “**Settings**” located in front of the feed.

<figure><img src="https://lh7-rt.googleusercontent.com/docsz/AD_4nXfBPvqgWU--qMqrz8-z-yIdHV35NylibK9ACzh4A_9QAWFAmRWydYl8ZBWhwQWGMVu1XIaA8fPqtkeVQFBWj3eZzALCbYL5krX2jdhbt2aTUjr30RKEBDERh70uY6RTl-2bmEBSMOJDHRIeCH-ok_pBRMth?key=ZjRnmer1HVEsSLnsCLcGMA" alt=""><figcaption></figcaption></figure>

2. Scroll down to the preference settings. If all of your products have GTINs, select "**Yes**" for the "**Product Identifier Exists**" option and check the box indicating "**Do your Products have GTIN?**." If any of your products do not have GTIN, choose "**No**" and leave the box unchecked; otherwise, it may result in errors in your Google Merchant Center. Here I'll keep this box unchecked and the product identifier as No as I don't have a GTIN number for all my products.

<figure><img src="https://lh7-rt.googleusercontent.com/docsz/AD_4nXfNS5Vr_YOiuwDuzf1N-drTXbxcUHfZlejpTgrPr4TEDc8UdWVN6FwJDdGYZdGeQY0I7sR1EV6-00hOslTQoZWnK-9Z1yAFBEk_0vgCNfPpqa8o5nrplaVR3nfOmH-0F1rxxhUrp6xe494HiIezcFz3izs?key=ZjRnmer1HVEsSLnsCLcGMA" alt=""><figcaption></figcaption></figure>

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