# Is any rule for an wallet address markes in blacklist?

**URL:** <https://forum.thegraph.com/t/is-any-rule-for-an-wallet-address-markes-in-blacklist/2597>\
**Category:** Questions\
**Created:** [October 4, 2021, 2:48pm UTC](https://forum.thegraph.com/t/is-any-rule-for-an-wallet-address-markes-in-blacklist/2597 "2021-10-04T14:48:10Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![thaieibvn](https://avatars.discourse-cdn.com/v4/letter/t/b3f665/32.png) [@thaieibvn](https://forum.thegraph.com/u/thaieibvn)\
**Post date:** [October 4, 2021, 2:48pm UTC](https://forum.thegraph.com/t/is-any-rule-for-an-wallet-address-markes-in-blacklist/2597/1 "2021-10-04T14:48:10Z")

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My wallet address can not query data by thegraph api in polygon network, it always return null, but other waller has data.

How can I solve this ? Thanks