Hi,
Thank you for reaching out.
You may refer to this
article for more information on similar audiences. As to the factors and how long Google Ads takes to create the said similar audiences, I'm afraid that this is already outside the scope of our API team. That said, I would recommend that you reach out to the Google Ads Product Support team instead, via this
link, for further guidance.
I hope this helps.
Best regards,
 |
| Peter Laurence Napa Oliquino |
| Google Ads API Team |
|
|
| |

ref:_00D1U1174p._5004Q2CR1An:ref