principal33 | Common SAP Project Mistakes (and How to Avoid Them Before It’s Too Late) Skip to main content

SAP implementation and migration projects represent more than just IT upgrades — they are transformations that impact your processes, teams, and bottom line. Whether you’re moving from ECC to S/4HANA or starting from scratch with SAP, success depends on more than just choosing the right technology.

At principal33, we’ve supported many SAP projects across industries. What we’ve learned is clear: the biggest failures usually aren’t technical. They stem from strategic gaps, poor coordination, and lack of planning.

Below are the most common SAP project mistakes — and how to avoid them.

1. Starting without a clear business vision

Some companies launch SAP projects as a reaction to system aging or support deadlines. But without a defined business goal, the project lacks direction and relevance.

Mistake: The project is treated as a technical upgrade, not a transformation.

How to avoid:

  • Define KPIs and measurable business outcomes
  • Involve cross-functional stakeholders early
  • Align goals with real process improvements

2. Ignoring data preparation

No SAP system works well without clean, structured data. Poor data quality can delay or derail even well-designed solutions.

Mistake: Migrating messy, duplicated, or inconsistent data without a plan.

How to avoid:

  • Audit your existing data sets before migration
  • Define data cleansing rules and validation steps
  • Allocate time and resources for quality checks
principal33 | Common SAP Project Mistakes (and How to Avoid Them Before It’s Too Late)

3. Disconnect between IT and business units

If IT and operations aren’t aligned from day one, the system may not support actual workflows — or worse, introduce new inefficiencies.

Mistake: IT assumes what the business needs without validation.

How to avoid:

  • Run joint workshops between IT and business users
  • Validate designs using prototypes or mock-ups
  • Assign project owners across departments

4. Going for an “all at once” approach

Trying to implement everything at once increases the risk of overload, confusion, and hidden errors.

Mistake: One big go-live with no prioritization or phasing.

How to avoid:

  • Break down the project into critical process phases
  • Pilot new features with select user groups
  • Learn and adjust before full deployment

5. Choosing the wrong partner

Not all SAP partners are created equal. Large doesn’t always mean better — and not every consultant adapts well to your business.

Mistake: Selecting a partner without evaluating real fit or experience.

How to avoid:

  • Ask for relevant project references

  • Review their methodology for customization and change

  • Ensure access to senior consultants throughout the project

6. No post-go-live planning

The real test begins after go-live. Yet many projects lose momentum when the system goes live — missing out on feedback, stabilization and optimization.

Mistake: Assuming the project ends at go-live.

How to avoid:

  • Encourage user feedback and apply fixes quickly

  • Plan a post-go-live support and optimization phase

  • Monitor performance indicators early

7. Overlooking the human factor

SAP changes how people work. If you don’t address adoption and change resistance, even the best system can fail.

Mistake: Training only on technical use, not process change.

How to avoid:

  • Communicate project purpose and benefits from the start

  • Deliver role-based training and peer support

  • Identify internal change agents

Conclusion

An SAP project is a journey — and the biggest risks are avoidable with the right strategy, partner, and process.

At principal33, we help businesses stay ahead of these risks by combining clear planning, functional understanding, and continuous support.

Avoiding mistakes is not just good project management — it’s the key to real SAP transformation.

principal33 | Common SAP Project Mistakes (and How to Avoid Them Before It’s Too Late)