Optional & not required Fields in webservice

Hi All,
I have published my webservice as orchestration,
Everything is good till now,
But user wants a couple of fields as optional & not required (the process should not break if the fields are not present in request xml),
so,i made that element name to nillable to true & minoccurs to 0, as shown
But in wsdl it creates minoccurs=1, not sure why it sets minoccurs=1, when the published schema has minoccurs=0 !!
the following is the wsdl screenshot.
Please let me know what can i do for making the fields optional & not required.
thanks,
Sarva.

First we will have to understand the issue.
Yes, this is an issue with BizTalk Web publishing wizard. But if you actual see it in practical terms, it’s not much of an issue. May be in some cases this could really cause
an issue when client just use WSDL.
The MSND URL which Rachit has shared may out of date. Because as mentioned in the MSDN blog ““If
you publish a schema that contains minOccurs or maxOccurs attributes
with specific values, these values may be different in schema exposed by the published Web service” – No. It’s not the exposed schema which will have different values
for minOccurs or maxOccurs attributes,
its only for the WSDL file which will have different values. If you
actually see the schema from the virtual directory, this will correct minOccurs or maxOccurs attributes. This is why when anyone who access/consume the web service by WSDL, will
also need to use schema while consuming. WSDL shall be used to access the operation name and data type (Schema) references whereas the actual definition for the data elements are accessed from schema.
If this answers your question please mark it accordingly. If this post is helpful, please vote as helpful by clicking the upward arrow mark next to my reply.

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1. Assign a screen group to FIELD2 and FIELD3. If FIELD1 = 'Y' then LOOP AT SCREEN, and set screen-required = 1 for that specific screen group.
Problem with this approach is that, if I select FIELD1 = 'Y' (hit space or enter -> sy-ucomm = TOGGLE), the fields are successfully set to required. However, now if at this point I go and change value for FIELD1 = 'X' (hit space or enter), FIELD2 and FIELD3 still remain set to required, and keep requesting value.
--> When FIELD1 chnage used module with additon CHAIN-REQUEST and check its value if it is to be set to optional by using loop at screen and set screen-required =0.*_
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Problem with this approach is that even though during TOGGLE event user is provided with an informational message, if the user directly decides to SAVE (no change for TOGGLE event), in this case the same message is displayed, and the project screen itself is closed. I do not think it would be ideal for the user to see the entire project close on SAVE everytime they miss a conditionally required field.
--> Can you please clarify it.
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