How To Fix SYSTEMSWITCH028 - Blocking/unblocking transactions: parameter & is wrong

SYSTEMSWITCH028 - Overview

• Message type: E = Error

• Message class: SYSTEMSWITCH - Messages for System Switch

• Message number: 028

• Message text: Blocking/unblocking transactions: parameter & is wrong

What causes this issue?

The function module PP_TRANSACTION_LOCK_UNLOCK was called incorrectly.

System Response

Possible values for LOCK are:
SPACE -> Do not lock PP transactions.
X -> Lock PP transactions.

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

Possible values for UNLOCK are:
SPACE -> Do not unlock PP transactions.
X -> Unlock PP transactions.
LOCK and UNLOCK cannot have the same value simultaneously.
Possible values for COMMIT are:
SPACE -> No update of the locks/unlocks within the
function module.
X -> Update of the locks/unlocks within the
function module.

How to fix this error?

Check the input parameters.

Error message extract from SAP system. Copyright SAP SE.

SYSTEMSWITCH028 - Details

• The SAP error message SYSTEMSWITCH028 indicates that there is an issue with the parameters used for blocking or unblocking transactions in the system. This error typically arises when the system is trying to execute a transaction that is not properly configured or when the parameters provided do not meet the expected criteria.
  
  Cause:
  
  Incorrect Parameter Value: The parameter specified in the transaction is incorrect or not recognized by the system.
  
  Configuration Issues: There may be a misconfiguration in the system settings related to transaction blocking/unblocking.
  Authorization Issues: The user may not have the necessary authorizations to perform the blocking/unblocking operation.
  System State: The system may be in a state that does not allow for the transaction to be processed (e.g., during a system upgrade or maintenance).
  
  
  Solution:
  
  Check Parameter Value: Verify the parameter value being used in the transaction. Ensure that it is valid and correctly formatted.
  Review Configuration: Check the configuration settings related to transaction blocking/unblocking. This