tagResource
Adds or overwrites only the specified tags for the specified Amazon Pinpoint SMS Voice, version 2 resource. When you specify an existing tag key, the value is overwritten with the new value. Each resource can have a maximum of 50 tags. Each tag consists of a key and an optional value. Tag keys must be unique per resource. For more information about tags, see Tagging Amazon Pinpoint resources in the Amazon Pinpoint Developer Guide.