How To Fix ISI028 - Default fax number can not be deleted

SAP Error Message - Details

• Message type: E = Error

• Message class: ISI - Message class for Supplier Workplace

• Message number: 028

• Message text: Default fax number can not be deleted

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message ISI028 - Default fax number can not be deleted ?

  The SAP error message ISI028, which states "Default fax number cannot be deleted," typically occurs when a user attempts to delete a default fax number that is set in the system. This error is related to the configuration of communication methods in SAP, particularly in the context of business partner or customer/vendor master data.
  Cause:
  
  Default Setting: The fax number you are trying to delete is marked as the default fax number for a business partner, customer, or vendor. SAP does not allow the deletion of default communication methods to ensure that there is always a valid method of communication available.
  Data Integrity: The system enforces data integrity rules to prevent situations where a business partner might not have any valid communication methods.
  
  Solution:
  To resolve this error, you need to follow these steps:
  
  
  Change Default Fax Number:
  
  Navigate to the relevant business partner, customer, or vendor master data.
  Change the default fax number to another valid fax number or communication method. This can usually be done in the communication section of the master data.
  Once you have set a different fax number as the default, you should be able to delete the original fax number without encountering the error.
  
  
  
  Set a New Default:
  
  If you do not have another fax number to set as default, you may need to create a new fax number first, set it as the default, and then delete the old one.
  
  
  
  Check Configuration:
  
  Ensure that the configuration settings for communication methods in your SAP system are correctly set up. This may involve checking the relevant customizing settings in the SAP IMG (Implementation Guide).
  
  
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like BP (Business Partner), XD01 (Create Customer), or MK01 (Create Vendor) to access the master data where the fax number is stored.
  SAP Notes: Check for any relevant SAP Notes or documentation that may provide additional insights or updates regarding this error message.
  User Permissions: Ensure that you have the necessary permissions to modify the master data, as restrictions may also lead to issues when trying to change or delete information.
  
  If you continue to experience issues after following these steps, it may be beneficial to consult with your SAP support team or refer to SAP documentation for further assistance.