PaymentTerms->Amount

Title: PaymentTerms->Amount

Dear all

We have a discussed i NES the meaning of PaymentTerms->Amount. The difinition is "The payment amount for the Payment Terms.". 

1) Is this the amount the payment terms applies to (e.g. for split payment) 

2) or is it a fixed penalty amount? 

Arguments for number 1:

Since there can be multible PaymentTerms an implicit rule can be given that the sum of PaymentTerms->Amount is equal LegalMonetaryTotal->PayableAmount.

If Amount was meant to be PenaltyAmount if would have been named "PenaltySurchargeAmount" like PenaltyChageRate.

Arguments for number 2

PaymentDueDate is part of paymentMeans

PaymentTerms->Amount is not part of UBL 1.0, but an new element

Can anyone help me find out the original requirement for this? I would also like to have help with how to specify split payment in UBL + how to specify a fix penalty amount.

Kind regards

Peter