Error Description :
-1 : invalidArgument=Value of '15' is not valid for 'index'. Parameter name : index [fillPayment-frmWalkIn]
Screenshot:
Cause :
If there is any room which has more than 15 payment entries on payment information tab, this error will pop up.
Solution :
This problem was noticed in version 6.1.159.005. This was fixed and released in version 6.1.160.005 and above.
1) Take latest database backup
2) Download & Install version 6.1.160.005 or Update it to Latest Service Pack Version