[BR-DEC-01-SG]-The allowed maximum number of decimals for the Document level allowance amount (IBT-092) is 2.
BR-DEC-01-SG/ubl:Invoice/cac:AllowanceCharge[cbc:ChargeIndicator = false()] | /cn:CreditNote/cac:AllowanceCharge[cbc:ChargeIndicator = false()]string-length(substring-after(cbc:Amount,'.'))<=2