How To Fix FG301 - You cannot block all customers

FG301 - Overview

• Message type: E = Error

• Message class: FG - Program Error Messages

• Message number: 301

• Message text: You cannot block all customers

What causes this issue?

At least one customer is blocked for master record maintenance.

System Response

The program cannot start.

How to fix this error?

The program for determining all customer/vendor links changes a large
quantity of customer/vendor master data. It is therefore necessary that
neither the master record of a customer nor of a vendor is being
maintained.
To start the program, determine which user has authorization to block a
customer or vendor (lock objects EXKNA1 and EXLFA1). Ask this person to
exit the transactions and restart the program. No other user can then
change the customer or vendor data for the duration of the program run.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message FG301 - You cannot block all customers ?

  The SAP error message FG301, "You cannot block all customers," typically occurs when an attempt is made to block all customers in the system, which is not allowed. This error is often encountered in the context of customer master data management, particularly when trying to block customers for sales or other transactions.
  
  Cause:
  
  Blocking All Customers: The primary cause of this error is an attempt to block all customer accounts in the system. SAP does not allow the blocking of all customers simultaneously as it could disrupt business operations.
  Configuration Settings: There may be specific configuration settings in the system that prevent the blocking of all customers.
  User Permissions: The user may not have the necessary permissions to perform the action, leading to restrictions on blocking customers.
  
  
  Solution:
  
  Block Individual Customers: Instead of trying to block all customers, identify and block individual customer accounts that need to be restricted. This can be done through the customer