Microsoft Dynamics 365 FO

A technical blog dedicated to Microsoft Dynamics AX and Dynamics 365 Finance & Operations, sharing practical solutions from real-time project experience. It includes X++ code examples, common issue resolutions, debugging approaches and troubleshooting tips to help developers handle day-to-day challenges effectively.

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How to Override a Form Control's Lookup Using an Extension Class in D365 F&O

on August 17, 2026

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Create ledger journals in D365FO using X++

While working on Dynamics 365 Finance & Operations, there are many situations where we need to create ledger journals through X++ code instead of entering them manually from the UI. This usually comes up when data is coming from an external system, a staging table, or when we want to automate accounting entries. In this post, I’m sharing a simple approach I used to create ledger journals and journal lines programmatically using X++. High-Level Approach The process is straightforward: Create the journal header Initialize LedgerJournalEngine Create journal lines Set account, dimensions, debit/credit Insert the records Step 1: Create Journal Header // Header creation ledgerJournalTable.JournalNum = NumberSeq::newGetNum(LedgerParameters::numRefJournalNum()).num(); ledgerJournalTable.initFromLedgerJournalName(ledgerJournalTrans_Buffer.JournalName); ledgerJournalTable.insert(); ledgerJournalEngine = LedgerJournalEngine::construct(ledgerJournalTable.JournalType); ledg...

Useful DateTimeUtil Methods in D365 FO X++ (Dynamics AX / Dynamics 365 Finance & Operations)

Working with date and time is a very common requirement when developing solutions in Dynamics AX and Dynamics 365 Finance & Operations. Whether it’s handling batch jobs, logging execution time, applying business rules based on dates or converting values across time zones, date-time handling needs to be done carefully. In X++ DateTimeUtil plays a key role in managing all date and time–related operations. It provides several built-in methods to convert dates, handle UTCDateTime values and work with user or system time zones in a reliable way. During my development work, I have frequently used the following DateTimeUtil methods. I have collected them here as a quick reference that can help developers understand and use date-time operations more effectively in Dynamics AX / D365 FO. Below is a list of commonly used DateTimeUtil methods with examples that you can use in your day-to-day X++ development. // Get Past date time DateTimeUtil::addDays(DateTimeUtil::utcNow(), -1); // Convert D...

How to get current user information using x++ in D365 F&O | AX 2012

When building business logic in Microsoft Dynamics AX or Dynamics 365 for Finance and Operations, it’s often important to know who the current logged-in user is. This blog post shows a simple X++ example to fetch the current user ID and user account type at runtime. curUserId() This built-in function returns the User ID of the person currently logged into the application. class getCurrentUserInfo { /// <summary> /// this method used to get current user detail /// </summary> /// <param name = "_args">The specified arguments.</param> public static void main(Args _args) { info(strfmt("Current User - %1",curUserId())); info(strfmt("User Account Type - %1",xUserInfo::find(false,curUserId()).accountType)); } } Output will look ...

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