Amazon Pinpoint SMS

The following channel-specific fields are shown for Amazon Pinpoint SMS channels:

Access key: this mandatory text property allows you to specify the access key to be used when connecting to Amazon Web Services (AWS). It accepts a maximum of 100 characters.
Secret key: this password-masked mandatory text property allows you to specify the secret key to be used when connecting to AWS. It accepts a maximum of 100 characters.
Region endpoint: this dropdown property allows you to specify the AWS region to be used when connecting to Amazon Pinpoint. It defaults to the value 'US East (N. Virginia)(us-east-1)'.
Pinpoint application: clicking this button displays a dialog, in which you can choose the Amazon Pinpoint application to be used when sending SMS messages. Note that a validation error is raised if you click the button prior to provision of credentials. Specification of a Pinpoint application is mandatory.
Segment role ARN: this mandatory text property allows you to specify the Amazon Resource Name (ARN) to be used to authorize Pinpoint to access an AWS S3 bucket folder. It accepts a maximum of 100 characters.
Amazon S3 bucket folder: clicking this button displays a dialog, in which you can choose an AWS S3 bucket folder from within a list of existing external content providers. The selected bucket will be used when uploading CSV files. Specification of an Amazon S3 CSV bucket folder is mandatory.
Max. recipients per file: this numeric property allows you to specify the maximum number of records to be exported per CSV file. It defaults to 10,000, and accepts a range of values from 10,000 to 200,000.
Origination phone number: this optional text property accepts a maximum of 100 characters, and allows you to specify a phone number to be used as the message sender as displayed on receiving devices.
Sender ID: this optional text property accepts a maximum of 20 alphanumeric and/or hyphen characters, and allows you to specify a sender ID to be used as the message sender as displayed on receiving devices.

Only one of Origination phone number or Sender ID may be provided.