SAP Message >0449 - Error when setting lock &1 business partner &2 contract acct &3 error: &4

Diagnosis
The dunning activity run tried to set a clearing lock. One of thefollowing errors occurred:

  • The lock already exists on the database.

  • No further activities required.
    • The information transferred is incomplete.

    • Check the function module 'VKKMA3_CLEARING_LOCK' and the datatransferred to the module.
      • You have no authorization for creating lock entries.

      • Have your authorization profile changed.
        • The system could not create the lock entry for a commercial lock
        • because the table in which commercial locks are managed (DFKKLOCKS) waslocked.
          Enter the clearing lock online.