Custom ERP Migration: Dynamics AX 2012 to D365 F&O (Sarulla Operations)

Modernizing geothermal operations ERP. Technical consultant for Sarulla Operations Ltd., upgrading custom workflows and data tables from AX 2012 to Dynamics 365 Finance & Operations.

🌟 Key Features

• 🛠️ Custom Code Refactoring: Successfully migrated highly complex X++ customizations into extension models.
• ☁️ Cloud Readiness: Prepared and assessed customization code for deployment on Microsoft-managed SaaS infrastructure.
• 📦 Data Entity Design: Designed custom data entities to facilitate the migration of highly customized business tables.
• 🐞 Issue Resolution: Solved complex technical issues regarding runtime exceptions and data mapping mismatches.

🛠️ Tech Stack & Architecture

• ERP Solution: Microsoft Dynamics 365 Finance & Operations (Cloud)
• Programming Language: X++
• Database: Microsoft SQL Server / Azure SQL
• Configuration & Deployments: Lifecycle Services (LCS)
• Source Control: Azure DevOps / TFVC

🔧 Technical Insights

• Chain of Command (CoC): Reconstructed standard class overlayering from AX 2012 by implementing X++ class extensions using Chain of Command, maintaining code isolation.
• Azure LCS Diagnostics: Leveraged LCS code upgrade tools to analyze and generate reports on custom delta packages.
• Custom Entity Modeling: Built composite data entities to handle nested, custom parent-child relational tables for geothermal asset logging.

🚦 Challenges and Solutions

• Heavily Customized Core Table Schemas: Standard tables (like VendTable, CustTable, InventTable) had hundreds of lines of inline X++ modifications.
  • Solution: Separated the logic into dedicated handler classes triggered by standard table events (OnInserting, OnUpdating, OnValidatedWrite).
• Asset Log Data Volume: Thousands of operational telemetry records had to match up with transactional records.
  • Solution: Developed a custom staging tool in AX 2012 to clean up data before running exports, resolving data-type mismatches.

🏆 Outcome

Sarulla Operations Ltd. successfully transitioned to Dynamics 365 F&O, keeping their business-critical custom logging capabilities intact. The new system improved compliance and provided better speed, stability, and cloud integration.