How To Fix 26163 - Function "&" not possible if network address is "DEFAULT"

SAP Error Message - Details

• Message type: E = Error

• Message class: 26 - Dokumentenverwaltung

• Message number: 163

• Message text: Function "&" not possible if network address is "DEFAULT"

What causes this issue?

You want to change the data carrier type of your frontend computer

System Response

The system checks the variable "hostname". You can only use this
function if the variable "hostname" is set for your frontend computer.

How to fix this error?

As the variable "hostname" is <ZH>not</> set for your frontend
computer, you cannot use this function.
The data carrier type of your frontend computer is determined
automatically by the system. The system uses the data carrier type for
which the network address "DEFAULT" is defined.
Since the system determines the data carrier type of your frontend
computer automatically, you can terminate the function.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 26163 - Function "&" not possible if network address is "DEFAULT" ?

  The SAP error message 26163, which states "Function '&' not possible if network address is 'DEFAULT'," typically occurs in the context of network configuration or communication settings within the SAP system. This error indicates that a specific function cannot be executed because the network address is set to "DEFAULT," which is not a valid or acceptable configuration for that function.
  Cause:
  
  Network Configuration: The error usually arises when the system is trying to perform a function that requires a specific network address, but the address is set to "DEFAULT." This can happen if the system is not properly configured to communicate with other systems or services.
  Missing or Incorrect Settings: The network settings in the SAP system may be incomplete or incorrectly configured, leading to the inability to resolve the network address.
  Functionality Limitation: Certain functions in SAP require specific network addresses to be defined, and using "DEFAULT" does not meet the requirements for those functions.
  
  Solution:
  
  
  Check Network Configuration:
  
  Go to transaction code SM59 (RFC Destinations) and check the configuration of the RFC destinations. Ensure that the network addresses are correctly defined and not set to "DEFAULT."
  If you are using a specific communication method (like HTTP, FTP, etc.), ensure that the corresponding settings are correctly configured.
  
  
  
  Update Network Address:
  
  If you find that the network address is set to "DEFAULT," update it to the appropriate IP address or hostname that corresponds to the target system or service you are trying to connect to.
  
  
  
  Review Functionality Requirements:
  
  Consult the documentation for the specific function you are trying to execute to understand its requirements regarding network addresses. Ensure that all prerequisites are met.
  
  
  
  Test Connectivity:
  
  After making changes, test the connectivity to the target system or service to ensure that the configuration is working as expected.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error message or provide additional guidance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM59 for RFC destinations, SICF for HTTP services, and RZ10 for profile parameters.
  Documentation: Review SAP documentation related to network configuration and RFC communication for best practices and troubleshooting steps.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered and resolved similar issues.
  
  By following these steps, you should be able to resolve the error message 26163 and ensure that the necessary network configurations are in place for the functions you are trying to execute.