The merchant account is identified and authorized using the Basic Authentication header, which is a base64 encoded account name and password (separated by a colon), e.g.:
--header 'Authorization: Basic RG9jZGF0YVBGOkJXazJhZkpV'
The merchant account is identified and authorized using the Basic Authentication header, which is a base64 encoded account name and password (separated by a colon), e.g.:
--header 'Authorization: Basic RG9jZGF0YVBGOkJXazJhZkpV'