How To Fix T5135 - Specified telephone number not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: T5 - SAPphone: Messages for telephony

• Message number: 135

• Message text: Specified telephone number not allowed

What causes this issue?

The telephone number must be selected from the list of deflect numbers.
Other telephone numbers cannot be entered here.

System Response

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

How to fix this error?

Select another telephone number or inform your system administrator
that the number you require should be inserted in the list of valid
numbers.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message T5135 - Specified telephone number not allowed ?

  The SAP error message T5135 "Specified telephone number not allowed" typically occurs when there is an issue with the format or validity of a telephone number entered in the system. This error is often encountered in modules related to personnel administration or employee master data, where telephone numbers are required.
  Causes:
  
  Invalid Format: The telephone number may not conform to the expected format defined in the system. This could include issues such as incorrect country codes, missing digits, or the use of invalid characters (e.g., letters or special symbols).
  Configuration Settings: The system may have specific configuration settings that restrict certain types of telephone numbers (e.g., mobile numbers, international numbers).
  Validation Rules: There may be validation rules in place that prevent the entry of certain telephone numbers based on predefined criteria.
  Data Entry Errors: Simple typographical errors during data entry can lead to this error.
  
  Solutions:
  
  
  Check Format: Ensure that the telephone number is entered in the correct format. This may include:
  
  Including the country code.
  Using only numeric characters (and possibly a few allowed symbols like "+" or "-").
  Ensuring the number has the correct number of digits.
  
  
  
  Review Configuration: If you have access to the configuration settings, check the settings related to telephone number formats in the relevant SAP module (e.g., Personnel Administration). You may need to consult with your SAP administrator or technical team to review these settings.
  
  
  Consult Documentation: Refer to SAP documentation or help files for the specific module you are working with to understand the expected format for telephone numbers.
  
  
  Data Validation: If you are importing data or using a batch process, ensure that the data being imported adheres to the required format and validation rules.
  
  
  Error Logs: Check any error logs or messages that may provide additional context about why the telephone number is being rejected.
  
  
  User Training: If this error is common among users, consider providing training or guidelines on how to correctly enter telephone numbers in the system.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to telephone number validation.
  User Manuals: Refer to user manuals or training materials specific to the SAP module you are using for more detailed instructions on entering and validating telephone numbers.
  Support: If the issue persists, consider reaching out to SAP support or your internal IT support team for further assistance.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.