Diagnosis
You want to set a settlement lock from the dunning activity run, butone of the following errors occurs:

• The database already contains the lock

No further action is necessary

• The information transferred is incomplete

Check the 'VKKM_N_INVOICE_LOCK' function module, and the datatransferred to it.

• You do not have authorization to create lock entries

Have your authorization profile adapted

• You cannot create a lock entry for a business lock, as there is a
database lock in the table that controls business locks (DFKKLOCKS).
Enter the settlement lock online.