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Microsoft Dynamics AX (Archived)

object reference not set to an instance of an object

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Posted on by 110

Hi Community, 

I am getting this "  object reference  not set to an instance of an object "  error message every time, please suggest me the corrective measures for the same.

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  • Martin Dráb Profile Picture
    232,866 Most Valuable Professional on at
    RE: object reference not set to an instance of an object

    Microsoft calls this "the Action center". If interested, you can read slightly more about it in Messaging system for Finance and Operations apps.

  • Adila Profile Picture
    10 on at
    RE: object reference not set to an instance of an object

    Very thanks for your reply. I also think that the best way is to involve the developer.

    The answer to your question “What do you think with the error appears as a warning” I will attach you a picture (screen capture).

    Best regards.

    Picture-1.png_2D00_640x480.png

  • Martin Dráb Profile Picture
    232,866 Most Valuable Professional on at
    RE: object reference not set to an instance of an object

    What do you mean by "error is appeared as alert"?

    As said above, it's a very generic error and it's impossible to say which call at which place is causing it. If the error message doesn't contain the stack trace (the sequence of calls leading to the error), you should ask a developer to find the place.

    If code was written correctly, you shouldn't ever see such an error, therefore you should involve a developer in either case.

  • Adila Profile Picture
    10 on at
    RE: object reference not set to an instance of an object

    We also get the error “Object reference not set to an instance of an object” in Dynamics 365 for Finance and Operations cloud environment. We are AX consultants and couldn’t use debugger. What we was done before error appears:

    Account payable-->Invoices-->Received invoices-->New (or Edit too)

    After that error is appeared as alert.

    We will very pleasure if you have any hint for help for our system support.

  • Blue Wang Profile Picture
    on at
    RE: object reference not set to an instance of an object

    Hi Vinay,

    Object reference not set to an instance of an object.

    As it says, you are using null objects as normal references

    In most cases, when you assign a value to an object, this exception occurs if the value is null.

    NullReferenceException indicates that you are trying to access member fields or function types on  null object reference. This means a reference to an uninitialized object.

    It's hard to tell you how to correct errors without knowing your environment and code structure. You need to find the source of the problem through error and debugging.

    So, we still need more information from you.

  • Suggested answer
    nmaenpaa Profile Picture
    101,158 Moderator on at
    RE: object reference not set to an instance of an object

    Is this question about Dynamics AX or Dynamics 365 for Finance and Operations?

    At least in D365FO you can simply open any VS solution (of D365FO), attach VS debugger to w3wp.exe / iisexpress (depending of your environment type), then, in the browser, run the process that gives you this error, and the debugger will show you where it comes from.

    But you will need to reproduce it in a dev system because you can't debug other systems so easily (and prod not at all).

  • Martin Dráb Profile Picture
    232,866 Most Valuable Professional on at
    RE: object reference not set to an instance of an object

    This is a very generic error thrown when an application is trying to work with a reference that doesn't point to any object. There is no universal solution - you must find the cause in your particular case and fix it, e.g. adding code initializing the variable or running the code using the object only if it's actually set.

  • Ludwig Reinhard Profile Picture
    Microsoft Employee on at
    RE: object reference not set to an instance of an object

    Hello Vinay,

    Can you explain where and when you get this message exactly?

    What has been done before?

    Would be great if you could share.

    Many thanks and best regards,

    Ludwig

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