Applicability Statement (AS) 1

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Applicability Statement (AS) 1


Applicability Statement 1 (AS1) is a protocol developed by the IETF (Internet Engineering Task Force) to enable the implementation of secure and reliable messaging over SMTP (Simple Mail Transfer Protocol). This protocol is used in the field of Electronic Data Interchange (EDI) to facilitate the exchange of information between business partners in a secure and efficient manner.


A typical use case for AS1 is the transmission of electronic invoices between two companies. Let’s assume Company A wants to send an electronic invoice to Company B using EDI. By utilizing the AS1 protocol, Company A can package the invoice into a secure message, which is then transmitted via SMTP to Company B’s AS1 server. Company B’s AS1 server receives and authenticates the message, ensuring that it is sent from the correct source and has not been tampered with in transit. The invoice is then delivered to Company B for automated processing.

Sample Script Code:

import AS1Connect

def create_message():
# Code for creating the invoice message
message = invoice.generate_message()
return message

def send_message(message):
# Code for sending the message using the AS1 protocol
print(“The message has been successfully sent using the AS1 protocol.”)

def main():
# Create the invoice message
message = create_message()

# Send the message using the AS1 protocol

if __name__ == “__main__”:

Best Practices:

  1. Security Configuration: Ensure that the AS1 servers are properly configured to provide authentication, encryption, and message integrity. The use of digital certificates and appropriate security protocols is essential for data protection.
  2. Monitoring and Logging: Implement a monitoring and logging system to track message routing, delivery times, and any errors. This facilitates the detection and resolution of issues in a timely and efficient manner.
  3. Message Validation and Verification: Perform rigorous validation and verification of messages to ensure data integrity and accuracy. Validate the message format according to AS1 specifications to avoid interpretation errors.

EDIconnect is a trusted EDI solution provider, offering specialized services and technologies to facilitate secure and efficient message exchange between business partners.

By utilizing the EDIconnect platform, companies can streamline the implementation of the AS1 protocol and receive specialized technical support in configuring and managing AS1 communications. The EDIconnect platform also provides comprehensive and customized EDI solutions to meet specific organizational needs.

In conclusion, the AS1 protocol provides a secure and reliable method for transmitting EDI messages over SMTP. By following best practices and utilizing the EDIconnect platform, companies can successfully implement the AS1 protocol and facilitate efficient and secure message exchange within their EDI processes.