The Content API for Shopping will undergo planned maintenance on September 28, 2023, from 15:00 to 17:00 UTC. During this time, you won't be able to use the API to make changes to your account.
A message that represents custom attributes. Exactly one of value or groupValues must be provided. Maximum allowed number of characters for each custom attribute is 10240 (represents sum of characters for name and value). Maximum 2500 custom attributes can be set per merchant, with total size of 102.4kB.