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Dynamics 365 Community / Forums / Finance | Project Operations, Human Resources, ... / What is the best way t...
Finance | Project Operations, Human Resources, ...
Suggested Answer

What is the best way to deal with error "Object reference not set to an instance of an object" ?

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Posted on by Axel Cage 309

Hi guys,

I have a custom form which in it there is process by clicking some button. If I check with few scenario at my DevBox there is no error, but in UAT there is this error :  "Object reference not set to an instance of an object" 

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What is the best way to trace this kind of error ? Since there is no other message, and I can't debug it in UAT. I tried with the same scenario, same data entry, but obviously cannot 100% the exact same data for all the linking when processing the whole relation of it like master data or other configuration. 

Thanks,

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  • Suggested answer
    Mohit Rampal Profile Picture
    Mohit Rampal 12,565 Moderator on at

    Hi Axel, You can restore UAT Database in Dev to replicate issue or another way is to debug UAT environment from your Devbox.

    Check this article

    aristonjavier.wordpress.com/.../

    If even after Database restore, its not replicated then it might be code merge issue, so ensure that your changes are merged & deployed properly in UAT

  • Martin Dráb Profile Picture
    Martin Dráb 238,743 Most Valuable Professional on at

    If it's coming from code, the only way is avoiding the attempt to call method on nothing (null), because it makes no sense and it must fail. Maybe there shouldn't ever be null and there is a bug causing that. Or it may be null in come case and you need to check the value before using it.

    Regarding debugging, you can even configure a DEV environment to connect to the database of another (non-production) environment.

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