How To Fix IDOC_ADAPTER421 - Enter a port name

SAP Error Message - Details

• Message type: E = Error

• Message class: IDOC_ADAPTER - Messages for the IDoc Adapter

• Message number: 421

• Message text: Enter a port name

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message IDOC_ADAPTER421 - Enter a port name ?

  The SAP error message IDOC_ADAPTER421, which states "Enter a port name," typically occurs in the context of IDoc processing when the system is unable to find a specified port for communication. This can happen during the configuration of IDoc interfaces or when trying to send or receive IDocs.
  Cause:
  
  Missing Port Configuration: The port that is supposed to be used for IDoc communication is not defined in the system.
  Incorrect Port Name: The port name specified in the IDoc processing configuration is incorrect or does not exist.
  Transport Layer Issues: There may be issues with the transport layer settings that prevent the system from recognizing the port.
  User Authorization: The user may not have the necessary authorizations to access the port configuration.
  
  Solution:
  
  
  Check Port Configuration:
  
  Go to transaction code WE21 (IDoc Interface: Port Definition) in SAP.
  Verify that the port you intend to use is correctly defined. If it is missing, create a new port definition.
  
  
  
  Verify Port Name:
  
  Ensure that the port name specified in the IDoc processing configuration (e.g., in the partner profile using transaction WE20) matches the defined port in WE21.
  
  
  
  Check Partner Profile:
  
  Use transaction WE20 to check the partner profile settings. Ensure that the correct port is assigned to the logical system.
  
  
  
  Review IDoc Processing:
  
  If you are processing IDocs manually, ensure that you are entering the correct port name in the relevant fields.
  
  
  
  User Authorizations:
  
  Check if the user has the necessary authorizations to access the port configuration. If not, consult with your SAP security team to grant the required permissions.
  
  
  
  Testing:
  
  After making the necessary changes, test the IDoc processing again to ensure that the error is resolved.
  
  
  
  Related Information:
  
  IDoc Basics: IDocs (Intermediate Documents) are used for data interchange between SAP systems and external systems. Understanding how IDocs work can help in troubleshooting related issues.
  Transaction Codes:
  
  WE21: For defining and managing ports.
  WE20: For managing partner profiles.
  WE02: For monitoring IDocs and checking their status.
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to IDoc processing and port configuration.
  
  If the issue persists after following these steps, consider reaching out to SAP support or consulting with an SAP expert for further assistance.