To fix this issue, please follow the steps below:
Close all UBS systems.
Go to C:\UBSACC2015\Tools.
Double-click Recover.exe.
Click Select record file.
Search for Paydet.dbf in C:\UBSBSM2015\Databasefolder\.
Click ErrorScan/Repair.
Open UBS BSM.
If another DBF file is corrupted, repeat the same steps and select the corrupted file accordingly for step 5.