Authorization issues such as "Unable to determine service/operation name to be authorized" are frequently raised by the AWS Pinpoint SMS service while an SMS is being sent. Using cURL with the appropriate AWS Signature Version 4 authentication and configuration options would resolve this problem. Both cURL scripts and Python's Boto3 module aid in confirming authentication headers and guaranteeing that message requests adhere to transactional SMS requirements, which include response processing and sender ID validation.