BT-21 Invoice subject note about einvoicing-en16931 HOT 3 CLOSED

ok, code list 4451

from einvoicing-en16931.

Can you please show a complete example of how to use BT-21?
Accoring to the TS is is stated "...for the following textual note".
How to interpret this?

Is the first variant correct:

<cbc:Note>#AAA#Human readable description line one</cbc:Note>
<cbc:Note>#AAA#Human readable description line two</cbc:Note>
<cbc:Note>No subject code</cbc:Note>
<cbc:Note>#BBB#Human readable description other subject code</cbc:Note>

or the second one?

<cbc:Note>#AAA#</cbc:Note>
<cbc:Note>Human readable description line one</cbc:Note>
<cbc:Note>Human readable description line two</cbc:Note>
<cbc:Note>##</cbc:Note> <!-- this should bring an error, but how to -deactivate- subject code again -->
<cbc:Note>No subject code</cbc:Note>
<cbc:Note>#BBB#</cbc:Note>
<cbc:Note>Human readable description other subject code</cbc:Note>

from einvoicing-en16931.

Even if the cardinality of cbc:Note in UBL is 0..n, this is just for translation purposes: UBL has unbounded textual elements to allow for translating the text in different languages, but not to provide for an unbounded set of data elements.

In this case, there is a cardinality mismatch with the Norm: the Norm allows for a group of unbounded notes and in UBL you shall group them into a single cbc:Note element.

Regading your examples, the one that would fit is:

<cbc:Note>#AAA#Textual note</cbc:Note>

in case there is a code

or

<cbc:Note>Textual note</cbc:Note>

when there is no code.

from einvoicing-en16931.