Google currently limits brands and businesses with 10 or more locations to post through the API. The number of locations is determined by Google's internal chain detection.
Therefore any business or brand with fewer than 10 locations is allowed to Post through the API. If your location is considered to be a chain by Google's internal detections, the posts feature will be disabled.
Why are large chain retailers not allowed to Post with the API?
The Posts feature expands on to small- to medium-sized business (SMB) launch of Posts and enables SMBs that use third-party platforms to Post on Google (sourced from Google API documentation 20th June 2019)
Check out the following article to learn what are the types of posts that can be published via our tool.