Your AdMob account has maximum limits on areas like the maximum number of active ad units you can have. While you'll likely never notice them, bear these limits in mind when planning monetisation, campaigns and mediation in AdMob.
The following table shows the limits for different areas of your account.
| Limit type | Amount |
|---|---|
| Ad units | 50K |
| Ad units created per day |
1K standard ad units 1K partner bidding ad units |
| Ad units created per app per day |
20 standard ad units 20 partner bidding ad units |
| Apps | 10K |
| Mediation groups | 2K active or paused |
| Ad source instances per mediation group | 150 |
| Ad units per mediation group | 250 |
| Campaigns | 10K active or paused |
| Campaign ad creatives | 4M active or paused |
Values in the table are 'per account' unless otherwise specified.