How To Fix CRM_DOC_FLOW027 - Communication error when calling RFC with destination &1

SAP Error Message - Details

• Message type: E = Error

• Message class: CRM_DOC_FLOW - Output for document flow

• Message number: 027

• Message text: Communication error when calling RFC with destination &1

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CRM_DOC_FLOW027 - Communication error when calling RFC with destination &1 ?

  The SAP error message CRM_DOC_FLOW027 indicates a communication error when calling a Remote Function Call (RFC) with a specified destination. This error can occur in various scenarios, particularly in SAP CRM systems when trying to communicate with other SAP systems or external applications.
  Causes:
  
  Network Issues: There may be network connectivity problems between the SAP system and the target system defined in the RFC destination.
  Incorrect RFC Destination Configuration: The RFC destination may not be configured correctly, including incorrect parameters such as the target system's IP address, port, or user credentials.
  Authorization Issues: The user credentials used in the RFC destination may not have the necessary authorizations to perform the requested operation.
  Target System Down: The target system may be down or not reachable due to maintenance or other issues.
  Firewall Restrictions: Firewalls or security settings may be blocking the communication between the systems.
  SAP Gateway Issues: Problems with the SAP Gateway service on either the source