Migrating data from Excel to ERP without loss

Companies planning to integrate a new ERP system often face tens of thousands of data rows scattered across hundreds of Excel files, legacy Access databases, and even paper archives. The task is not just to transfer this data, but to do so without losing critically important information, preserving its integrity, and ensuring business process continuity during the transition. One wrong step can lead to financial losses, reduced productivity, and customer dissatisfaction.

Data migration preparation: audit and cleansing

Before commencing any migration, a thorough audit of existing data is essential. This stage is often underestimated, yet it dictates the success of the entire project. It’s not enough to know where data is stored; understanding its structure, quality, and relevance is crucial.

• Data source inventory: Identify all information storage locations: local servers, cloud storage, spreadsheets, legacy systems, paper archives.
• Data quality assessment: Analyze data for duplicates, missing values, format inconsistencies, and outdated information. For instance, a client database might contain multiple entries for the same company or obsolete contact details.
• Cleansing and standardization: Remove duplicates, correct errors, fill in missing fields, and unify data formats. For example, standardize date, address, and phone number formats.
• Volume and complexity assessment: Estimate the volume of data to be migrated and the complexity of its transformation. This will help in planning resources and timelines.

Data migration strategies

The choice of the right migration strategy depends on company size, data volume, available resources, and downtime tolerance. Two primary strategies exist:

Big-bang migration

This approach involves transferring all data from the old system to the new one simultaneously, typically during non-working hours (e.g., weekends). It requires meticulous planning and testing but avoids parallel operation of two systems.

Advantages:

• Rapid transition.
• No need for data synchronization between old and new systems.

Disadvantages:

• High risk of downtime if issues arise.
• Requires significant resources and coordinated team effort.

Phased migration

In phased migration, data is transferred in parts, modules, or by departments. This allows the company to continue operating with the old system while gradually implementing the new one.

Advantages:

• Reduced risks.
• Opportunity to correct errors in early stages.
• Minimal downtime.

Disadvantages:

• Longer process.
• Requires temporary data synchronization between the two systems.

Technical migration implementation stages

Technical migration is a complex process requiring a deep understanding of both the old and the new systems.

1. Data mapping: Create a detailed map of field correspondence between the old and new systems. This is critical for preserving data integrity and logic.
2. Data export: Extract data from source systems into an intermediate format (e.g., CSV, XML, JSON).
3. Data transformation (ETL): The process of Extract, Transform, and Load. During this stage, data is cleansed, aggregated, deduplicated, and formatted for the target ERP system.
4. Data import: Load the prepared data into the new ERP system using built-in tools or custom-developed scripts.
5. Verification and testing: After import, thorough checks for completeness, accuracy, and integrity are necessary. This includes comparing checksums, selective record comparison, and testing business processes with the new data.

How Softline solves this

The Softline team possesses extensive experience in implementing complex data migration projects for companies of various sizes, from the public sector to banks and telecommunication operators. We understand that each project is unique and offer tailored solutions that consider the client’s specific business needs.

• Comprehensive IT consulting: Softline specialists conduct in-depth audits of existing systems, analyze business processes, and develop optimal migration strategies to minimize risks and downtime. We assist in defining requirements for the new system and selecting the best solutions.
• Development on the UnityBase platform: Our proprietary Low-Code platform, UnityBase, enables rapid creation of custom tools for data export, transformation, and import. This is particularly valuable when dealing with non-standard formats or legacy systems lacking ready-made solutions. UnityBase provides flexibility in creating APIs for integration with various data sources.
• System integration: Softline specializes in integrating heterogeneous systems (ERP, CRM, HR systems, Electronic Document Management) and ensuring their seamless interaction. We develop microservice architectures and APIs for efficient data exchange, which is crucial during phased migration.
• Cloud solutions: We help clients migrate data to cloud environments (IaaS/PaaS/SaaS), ensuring a high level of information security and availability. Our experts design hybrid infrastructures that optimally combine on-premises and cloud resources.
• Cybersecurity expertise: During data migration, we place special emphasis on information protection. The Softline team ensures compliance with information security systems, conducts security audits, and implements solutions for personal data protection and leak prevention (DLP).

Transitioning from disparate Excel spreadsheets to a full-fledged ERP system is not merely a technical task but a strategic step towards digitalization and enhanced business efficiency. The key to success lies in meticulous planning, in-depth data auditing, selecting the optimal migration strategy, and engaging experienced professionals. The complexity of this process should not be underestimated; investing in a professional approach will pay off in the preservation of critical data and the uninterrupted operation of your company.