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#MSDyn365BC 2020 Wave 2 - Data Audit System Fields.

Hi Readers,

In this series of articles we will discuss about what's new in the product with Business Central 2020 Wave 2.

With Business Central 2020 Wave 2 (V17), Microsoft have added Data Audit System Fields in all Tables.

In this article we will understand what that means and how developers can utilize these fields with AL Programming.

#MSDyn365BC #BusinessCentral

With all tables, it means all - 

  • Base Microsoft Tables.
  • All Extension Tables.
  • Temporary Tables.
What are Audit System Fields added in every tables -
  • SystemCreatedBy
  • SystemCreatedOn
  • SystemLastModifiedBy
  • SystemLastModifiedOn



CreatedBy or ModifiedBy are GUID - Why?

When we create a New user in Business Central, a unique GUID is assigned to the user. 

GUID will never change for the use in Business Central. 

As a developer you can actually set a Lookup value based on GUID.


What These Fields are used for?
  • Used for Audit purpose. 
  • User cannot manually modify any of the audit Fields.
  • Developers cannot assign/modify values to any of the audit fields.
  • Platform sets these values.
  • Audit Fields cannot be imported with configuration packages.
How these Values are assigned?
  • After all onbefore[Modify|Insert] Events.
  • After the Modify/Insert Triggers.
  • Before all onafter [Modify|Insert] Events.
When New Records are Inserted?
  • SystemCreatedBy and SystemCreatedOn are populated with Values.
  • Fields SystemLastModifiedBy and SystemLastModifiedOn will be same.
When Records are Modified?
  • SystemLastModifiedBy & SystemLastModifedOn are updated.
  • No Impact on SystemCreatedBy and SystemCreatedOn.
What is there for Developers?
  • Developers can use these fields to filter records.
  • These Fields can be added in the page for user visibility.

Developer Usage - Example?

Example 1 - Add Fields in Page using Page Extension.



Example 2 - Use System Audit Fields in the code to filter Records.


Stay connected, We will discuss more about new features in product and how to use it.

Let me know your views as comment to this article.

Regards,
Saurav Dhyani
https://www.sauravdhyani.com/
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Location: House No. 1, Shivlok Colony, 2, near Himalayan Academy Post Office, Shivlok Colony, Sewla Kalan, Majra, Dehradun, Uttarakhand 248171, India

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