How To Fix 2Q012 - Character string for host name and SAProuter must be &1 long

SAP Error Message - Details

• Message type: E = Error

• Message class: 2Q - TMS Service Message Class

• Message number: 012

• Message text: Character string for host name and SAProuter must be &1 long

What causes this issue?

Communication via RFC occurs using a SAProuter. To do this, the
connection route is stored in a character string. For technical reasons
this character string including the other host name can have a maximum
length of <(>&<)>V1<(>&<)>.

System Response

The character string for the connection route is rejected.

How to fix this error?

Check the connection route. If necessary, enter a shorter character
string (for example, only 1 SAProuter or a shorter host name).

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 2Q012 - Character string for host name and SAProuter must be &1 long ?

  The SAP error message 2Q012 indicates that there is an issue with the length of the character string for the host name and SAProuter. Specifically, it states that the character string must be a certain length (denoted by &1), which typically refers to the maximum allowed length for host names or SAProuter strings in the configuration.
  Cause:
  
  Invalid Host Name Length: The host name or SAProuter string you are trying to use exceeds the maximum allowed length or is shorter than the minimum required length.
  Configuration Error: There may be a misconfiguration in the SAP system settings, particularly in the network settings or the SAProuter configuration.
  Typographical Error: There could be a typo in the host name or SAProuter string that is causing it to be invalid.
  
  Solution:
  
  Check Host Name Length: Ensure that the host name and SAProuter string conform to the required length. The maximum length for host names is typically 253 characters, but you should refer to the specific SAP documentation for your version to confirm the exact limits.
  Correct Configuration: Review the configuration settings in the SAP system. This includes checking the SAPROUTER string in the SAP GUI or the SAP Profile parameters.
  Use Valid Characters: Ensure that the host name and SAProuter string only contain valid characters (alphanumeric characters, hyphens, and periods) and do not start or end with a hyphen or period.
  Update SAProuter: If you are using an SAProuter, ensure that it is correctly configured and that the string used for routing is valid and within the required length.
  Test Connectivity: After making changes, test the connectivity to ensure that the issue is resolved.
  
  Related Information:
  
  SAP Documentation: Always refer to the official SAP documentation for the specific version you are using, as it may provide additional context or updates regarding host name and SAProuter configurations.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Network Configuration: If you are working in a networked environment, ensure that DNS settings are correctly configured and that the host name resolves properly.
  
  If the issue persists after following these steps, consider reaching out to your SAP Basis team or SAP support for further assistance.