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Dynamics 365 Community / Forums / Finance | Project Operations, Human Resources, ... / SSRS: The report param...
Finance | Project Operations, Human Resources, ...
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SSRS: The report parameter "DataSet1_xxxx" is a multi value parameter and accept NULL value, This is not allowed

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Posted on by Community Member

Hi all,

While creating SSRS report, one of my parameter which is a List type , so it is multi Value, can I put this as Nullable ?

Because it is coming from my report parameter which is allowed to have multiple value, but it is not mandatory so it is possible to have NULL. 

What should I do to cater this ?

Currently I put the Nullable to True, while the MultiValue also true, and give me error as in subject.

Thanks. 

I have the same question (0)
  • Sukrut Parab Profile Picture
    Sukrut Parab 71,735 Moderator on at

    What is set in the allow blank property ?

  • Mea_ Profile Picture
    Mea_ 60,286 on at

    If you get that error then its not allowed. It should not be null anyway, how do you init that list parameter?

  • Blue Wang Profile Picture
    Blue Wang Microsoft Employee on at

    Hi WWwong,

    In SSRS a multi-value parameter cannot include a NULL value.

    There is a method mentioned here, you can try it:

    https://www.mssqltips.com/sqlservertip/3502/allow-null-value-in-multi-value-report-parameter-in-sql-server-reporting-services/

  • Community Member Profile Picture
    Community Member on at

    Hi,

    @Sukrut, the AllowBlank property for that particular parameter is now False, So I can use this ?

    @Ievgen, the list is coming from a UIBuilder class that query CustTable which using SysLookupMultiSelectCtrl.

    @Blue, the link is good, but I'm wondering if it is make sense to add NULL value in that list, which is a query from CustTable.

    Thanks,

  • Blue Wang Profile Picture
    Blue Wang Microsoft Employee on at

    Hi WWwong,

    You want to pass multiple lookup, I think NULL is meaningless for your needs.

    You can use ListIterator.more () to confirm whether it points to a valid element in processReport().

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