Hello, a DingTalk account can be added to the certified enterprise limit of 100, the uncertified team cap is 10, the number of certified companies and uncertified teams is no more than 100.

To join multiple businesses, you need to contact the administrators of each enterprise to add them to the enterprise.
[Tips]:
1. If you have joined 10 non-certified teams, you will not be able to join the non-certified team again. You need to exit from another uncertified team, then you can continue to add them.
2. If falis to add employee on the mobile phone, it is recommended to try again using the Admin Panel (oa.dingtalk.com) on the computer.