The Hidden TM1 Mistake Costing You $30K Annually (And the 10-Minute Solution)

Manual TM1 documentation costs finance teams over $30K a year. Learn how automation cuts it from 2 weeks to 10 minutes

The $30,000 Problem Hiding in Plain Sight 

Last week, a finance manager of a leading real-estate firm told me something that should terrify every CFO: 
"We spent two full weeks documenting our TM1 models for the auditors. Again." 

That’s 80 hours of work, every quarter. With internal time, UAT and production updates, and inevitable consultant fees when things break, you’re looking at $30,000+ a year just to stay audit-ready.

For something that could be done in 10 minutes. 

What You’ll Learn in This Post

✔ The real cost of manual TM1 documentation
✔ Why Manual TM1 Documentation Fails (and What to Do Instead) 
✔ How 10-Minute TM1 Documentation is Possible
✔ How a CFO Cut TM1 Documentation Time by 2 Weeks per quarter


The Real Cost of Manual TM1 Documentation 

Your Current Reality: 
Time it takes to document one TM1 model: 40–60 hours 

  • Number of models: 2 (UAT and Production) 
  • Updates needed: 4 times per year (quarterly + audit) 
  • Your time value: $38.46/hour ($80,000 annual salary) 

Annual Documentation Cost: 

2 models × 50 hours × 4 updates × $38.46 = $15,384 
And that’s just your time cost. Now here’s where it gets ugly, because time isn’t even your biggest cost.


Three Hidden Costs That Triple Your Documentation Burden 

1. The Audit Panic Premium: $12,000 

When auditors request documentation, everything stops. Your team scrambles to create what should already exist: 

  • Emergency consultant support 
  • Overtime and weekend work
  • Delayed projects and missed deadlines 

On average, these unnecessary costs run about $12,000. We saw this firsthand with a mid-size company we worked with who had to hire consultants for "emergency audit documentation support".

 2. The Knowledge Loss Multiplier: $25,000 Per Departure 

When your TM1 expert leaves, inadequate documentation turns a transition into a crisis: 

  • 3 months of reduced productivity 
  • External consultant dependency 
  • Errors from misunderstood logic and undocumented cube relationships
  • Permanent loss of logic in IBM Planning Analytics models

We've seen companies spend $25,000+ recovering from a single key person departure because “Sarah was the only one who understood how the allocation model worked.” 

3. The Error Cascade Effect: $10,000 Per Incident 

Poor documentation leads to costly mistakes: 

  • Misunderstood cube relationships break calculations 
  • Hidden dependencies cause unexpected failures 
  • Troubleshooting takes days instead of hours 

A retail client recently lost $10,000 in consultant fees fixing an error that proper documentation would have prevented in minutes. 


Why Manual TM1 Documentation Fails

Manual Word/Excel Documentation 

  • Takes 40–60 hours per model 
  • Outdated before it’s finished 
  • Never matches the actual model 
  • No one trusts it during audits 

Screenshot Approaches 

  • Time-consuming to create 
  • Impossible to maintain 
  • Miss critical relationships 
  • Become fiction within weeks 

The brutal truth? Manual documentation is like painting a moving train. You’re never done, and it’s never right. 


Before Omni: Outdated, painful, manual TM1 documentation using Excel -- to track cube and dimension relationships; After Omni: Instant visualization of TM1 model relationships with automated cube and dimension mapping

How Do You Document TM1 Models Quickly?

Traditional tools like Excel and Word don’t scale. They’re slow, manual, and instantly outdated.

This next section shows you how automated TM1 documentation now takes less than 10 minutes, with no Excel sheets, no screenshots, and no guesswork.


The Fastest Way to Document Your TM1 Model

Here’s what changes everything: automated documentation that reads your TM1 model directly and creates complete, accurate documentation in minutes. 

Automated TM1 documentation created by Omni showing cube and dimension dependencies
With Omni, TM1 teams get a holistic visualization of their TM1 model. Understand relationships between cubes and dimensions instantly without any time wasted!

How does 10-minute documentation work? 

  1. Direct Model Reading: Connects to your TM1 REST API 
  2. Automatic Mapping: Instantly visualizes all cube relationships 
  3. Real-Time Updates: Documentation reflects your live model 
  4. Complete Coverage: Every cube, dimension, rule, and process 

No manual effort. No interpretation errors. No outdated documents. 

Picture

The results are immediate: 

✔Audit documentation: 2 weeks → 10 minutes 
✔ New team onboarding: 3 weeks → 3 days 
✔ Error investigation: Hours → Minutes 
✔ Knowledge preservation: Automatic