How To Fix MDG_LG001 - Communication error; see long text

SAP Error Message - Details

• Message type: E = Error

• Message class: MDG_LG - SAP Business Suite Foundation: Activation of Languages

• Message number: 001

• Message text: Communication error; see long text

What causes this issue?

There was a communication error when executing RFC modules
RFC connection: &V1&
Error message: &V2&

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?

Search for program terminations in the target system of the RFC call
under the user who is entered in the RFC connection (transaction
<DS:TRAN.ST22><LB><EX>ST22</></></>).

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 MDG_LG001 - Communication error; see long text ?

  The SAP error message MDG_LG001, which indicates a "Communication error; see long text," typically arises in the context of Master Data Governance (MDG) when there is a failure in communication between the MDG system and another system or service. This could be due to various reasons, including network issues, configuration problems, or issues with the external system being accessed.
  Causes:
  
  Network Issues: Problems with the network connection between the MDG system and the external system can lead to communication errors.
  Configuration Errors: Incorrect settings in the MDG system or the external system (like RFC destinations, logical systems, etc.) can cause communication failures.
  Service Availability: The external service or system may be down or not reachable.
  Authorization Issues: The user or system may not have the necessary permissions to access the external system.
  Data Format Issues: The data being sent or received may not be in the expected format, leading to communication errors.
  
  Solutions:
  
  Check Network Connectivity: Ensure that the network connection between the MDG system and the external system is stable and functioning properly.
  Review Configuration Settings:
  
  Verify the RFC destinations and ensure they are correctly configured.
  Check the logical system settings in both the MDG and the external system.
  
  
  Service Status: Confirm that the external service or system is up and running. You may need to contact the administrator of the external system.
  Authorization Checks: Ensure that the user or system has the necessary authorizations to perform the required actions.
  Review Logs: Check the application logs (transaction SLG1) for more detailed error messages that can provide insights into the specific cause of the communication error.
  Data Validation: Ensure that the data being sent or received is in the correct format and meets the requirements of the external system.
  
  Related Information:
  
  Long Text: The long text associated with the error message may provide additional context or specific details about the nature of the communication error. It is essential to review this text for more targeted troubleshooting.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address known issues related to this error message.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SLG1 (Application Log) and SM58 (Transactional RFC) to help diagnose and resolve the issue.
  
  If the problem persists after following these steps, it may be beneficial to engage with SAP support or consult with a technical expert familiar with your specific SAP environment.