1. Move-in/Move-out Transaction Analysis
Summary of ERCOT Analysis
July 1, 2002 through August 9, 2002
August 29, 2002

2. Move-in Move-out Transaction Analysis
Total transactions in sample = 403,527
Duplicate
TRAN_IDs
Invalid ESIID
Invalid ZIP
Duplicate 814_16s
Duplicate
814_16s
Duplicate 814_16s
Duplicate 814_16s
814_17s
814_17s
ESIID Not Active
814_17s
814_17s
Rep Active /
ESIID Inactive
Rep Invalid /
ESIID Inactive
Supplier not Certified
Incorrect Billing Type
Complete /
Cancelled
814_16s
NFI
814_16s
814_16s
814_16s

3. Move-in Move-out Transaction Analysis
Total transactions excluding duplicates = 304,200
Invalid ESIID
Invalid ZIP
Invalid ZIP
Invalid ESIID
814_17s
814_17s
ESIID Not Active
ESIID Not Active
Rep Active /
ESIID Inactive
Rep Active /
ESIID Inactive
Rep Invalid /
ESIID Inactive
Rep Invalid /
ESIID Inactive
Supplier not Certified
Supplier not Certified
Incorrect Billing Type
814_16s
Incorrect Billing Type
Complete /
Cancelled
814_16s
NFI
NFI
Complete /
Cancelled

4. Move-in Move-out Transaction Analysis
Total 814_17 Rejects = 31,347
Invalid ESIID
Invalid ZIP
Invalid ZIP
Invalid ESIID
ESIID Not Active
ESIID Not Active
Rep Active /
ESIID Inactive
Rep Active /
ESIID Inactive
Rep Invalid /
ESIID Inactive
Rep Invalid /
ESIID Inactive
Supplier not Certified
Supplier not Certified
Incorrect Billing Type
Incorrect Billing Type
Complete /
Cancelled
NFI
NFI
814_16 Mapping Failure
6% of total transactions

5. Move-in Move-out NFI Analysis
Reasons for NFIs and Estimated Volumes
Delay at TDSP in sending 867 to ERCOT
Estimated (10% - 20%)
Multiple Move-ins from CR for Same ESIID, Same Day, for different customers
Estimated (15% - 20%)
ERCOT failure to successfully update Siebel with 814_04 transaction from TDSP (hardening project)
ERCOT failure to successfully update Siebel with 867 transaction from TDSP (hardening project)
Total 50% - 80% of 18,958 NFIs in this sampling
(or 1.2% to 3% of total valid transactions are true NFIs)

6. Move-in Move-out Conclusions
Several short-term projects and initiatives will make a significant difference in errors/issues
Duplicates and invalid transactions are indications of other issues that can lead to different conclusions
50% to 80% of NFIs relate to Short-Term system issues and data coordination problems
Range is large (more analysis is needed to narrow this number)
Remaining NFIs are due to stacking and date change issues (i.e.. To be addressed by Long-Term project)
Once short-term issues are corrected, NFIs constitute 1.2% to 3% of the overall 814_17 Rejects based on this analysis

7. Move-in Move-out Transaction Analysis
50% adjustment to NFI & Invalid ESIID rejects
Invalid ESIID
Invalid ZIP
2,478 (<1%) - 6,195 (2%)
Other Rejects
Invalid ZIP
Invalid ESIID
814_17s
ESIID Not Active
ESIID Not Active
NFI Rejects
Rep Active /
ESIID Inactive
3,792 (1.2%) - 9,479 (3%)
Rep Active /
ESIID Inactive
Rep Invalid /
ESIID Inactive
Rep Invalid /
ESIID Inactive
Supplier not Certified
Supplier not Certified
Incorrect Billing Type
814_16s
Incorrect Billing Type
288,256 (95%) - 297,930 (97%)
Complete /
Cancelled
NFI
NFI
Complete /
Cancelled

8. Move-in Move-out Analysis Recommendations
Complete Root Cause Analysis
Confirm reasons for NFIs with TDSPs and CRs
Develop a comprehensive analysis of NFIs against the 29 business scenarios
Identify any additional Operational Issues or Market gaps in Move-in/Move-out process
Define a comprehensive list of business scenarios for Long-Term Project

9. Move-in Move-out Activities Timeline
On-going Short Term Activities
ERCOT
Analysis
Market
Analysis
30%
70%
Long-term Plan
(Detailed Requirements, RFP, etc.)
August
September
Mid-October

10. Move-in Move-out Considerations
What are the customer service requirements?
What can (or should) occur via transactions?
If scenarios are identified that are not reasonably accomplished via transactions, what are the new options?
What is the likelihood and frequency of items identified under item #3?