geefLijstZaakdocumenten should not return an error response when the zaak can't be found

[MLenterman]

According to the StUF-standard the "antwoord" element should return <ZKN:object StUF:entiteittype="ZAK" xsi:nil=”true” StUF:noValue=”waardeOnbekend” /> when a zaak is not found.

Paragraph 6.4.2 - https://www.gemmaonline.nl/images/gemmaonline/f/fa/Stuf0301.pdf

[MLenterman]

From StUF 03.01 - 6.4.1:

From the documentation it is not clear what the correct response is when a zaak can not be found:

• It is mentioned that if no elements can be returned, the response should be without 'antwoord' element.

• In a different paragraph it is said that if a value for an element within the scope object is not known, xsi:nil="true" StUF:value="waardeOnbekend" should be returned for that element. Object entiteitstype="ZAK" needs to be in the scope for the mandatory heeftRelevant.identificatie according to ZDS 1.1. Which in turn would suggest that the response should be object entiteitstype="ZAK" xsi:nil="true" value="WaardeOnbekend". But object entiteitstype="ZAK" is not nillable in the XSD.

• An example of the expected response by a ZDS application paints yet another variant. In the example object entiteitstype="ZAK" is return with only a zaak indentificatie element filled with the given identificatie value from the 'gelijk' section in the request. This makes no sense to me though, because zaak identificatie is not required to be part of the scope. Additionally it suggests to me that the zaak is known, but there are simply no documents attached to the zaak.