How To Fix C$866 - Enter a valid communication

SAP Error Message - Details

• Message type: E = Error

• Message class: C$ -

• Message number: 866

• Message text: Enter a valid communication

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message C$866 - Enter a valid communication ?

  The SAP error message C$866 "Enter a valid communication" typically occurs when there is an issue with the communication data entered in the system. This error can arise in various contexts, such as when entering communication details for a vendor, customer, or employee.
  Causes:
  
  Invalid Format: The communication data (like email, phone number, etc.) may not be in the correct format.
  Missing Required Fields: Certain mandatory fields may not have been filled out.
  Incorrect Data Type: The data entered may not match the expected data type (e.g., entering letters in a numeric field).
  Configuration Issues: There may be issues with the configuration settings in the SAP system related to communication methods.
  User Authorization: The user may not have the necessary permissions to enter or modify communication data.
  
  Solutions:
  
  Check Data Format: Ensure that the communication data is entered in the correct format. For example, email addresses should include "@" and a domain.
  Complete Required Fields: Verify that all mandatory fields are filled out correctly.
  Review Data Types: Make sure that the data entered matches the expected type (e.g., numeric fields should not contain letters).
  Configuration Review: Consult with your SAP administrator to check if there are any configuration settings that need to be adjusted.
  User Permissions: Ensure that the user has the necessary authorizations to enter or modify communication data.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Transaction Codes: Familiarize yourself with relevant transaction codes that may help in troubleshooting, such as SU53 for authorization checks or SE11 for data dictionary checks.
  Documentation: Refer to SAP documentation for guidelines on entering communication data correctly.
  Support: If the issue persists, consider reaching out to SAP support or your internal IT team for further assistance.
  
  By following these steps, you should be able to identify and resolve the cause of the C$866 error message in SAP.