How To Fix SR445 - MQTT password not allowed if MQTT user is not specified

SAP Error Message - Details

• Message type: E = Error

• Message class: SR - RFC utilities

• Message number: 445

• Message text: MQTT password not allowed if MQTT user is not specified

What causes this issue?

The user used for the MQTT logon was changed. The password used for MQTT
logons was initialized, for security reasons.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Enter the password for the current MQTT user again, if required.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SR445 - MQTT password not allowed if MQTT user is not specified ?

  The SAP error message SR445, which states "MQTT password not allowed if MQTT user is not specified," typically occurs in the context of configuring MQTT (Message Queuing Telemetry Transport) connections in SAP systems. This error indicates that there is an issue with the configuration of the MQTT connection, specifically related to the user credentials.
  Cause:
  The error arises when the MQTT connection configuration includes a password, but no MQTT user (username) has been specified. In MQTT, if you are using authentication, both a username and a password must be provided. If the username is missing, the system does not allow the password to be set, leading to this error.
  Solution:
  To resolve the SR445 error, you should ensure that both the MQTT username and password are correctly specified in the configuration. Here are the steps to do this:
  
  
  Access the MQTT Configuration:
  
  Go to the relevant configuration settings in your SAP system where the MQTT connection is defined.
  
  
  
  Specify the MQTT User:
  
  Ensure that you have a valid MQTT username entered in the configuration. This username should correspond to an account that has the necessary permissions to connect to the MQTT broker.
  
  
  
  Set the Password:
  
  After specifying the username, you can then enter the corresponding password for that user.
  
  
  
  Save and Test the Configuration:
  
  Save the changes to the configuration and test the connection to ensure that it is working correctly without any errors.
  
  
  
  Related Information:
  
  MQTT Overview: MQTT is a lightweight messaging protocol designed for low-bandwidth, high-latency, or unreliable networks. It is commonly used in IoT (Internet of Things) applications.
  Authentication in MQTT: When using MQTT, authentication can be done using username and password, or through other methods such as tokens or certificates, depending on the broker's configuration.
  SAP Documentation: For more detailed information on configuring MQTT in SAP, refer to the official SAP documentation or the specific guides related to the version of SAP you are using.
  
  By ensuring that both the username and password are correctly configured, you should be able to resolve the SR445 error and establish a successful MQTT connection.