In some cases, codes purchased directly from SEAGM has region restrictions. Any region restriction on a product will be clearly noted on the product's page.
1. You can check the Important Note section under the name of the product as shown below.
A region-locked product can only be used in that region. The example shown below was product restricted for the United States accounts ONLY.
2. The region tag in the title of the product will tell you which region/currency this product is for.
It will also mean that you cannot activate that product elsewhere. The example below was for the JP card which meant for the Japan account ONLY.
3. The product descriptions feature more information on products, including any additional local/server restrictions that may apply.
Because of this, there might be games with the GLOBAL tag which still not applicable in certain specific countries/regions. The example below was PUBG Mobile Global generally applicable for all regions except Japanese / Korean / Taiwan / Vietnam servers due to server restrictions.