Workers' compensation information system (WCIS)
FROI and SROI Data Quality
The Workers’ Compensation Information System (WCIS) collects First Reports of Injury (FROI) and Subsequent Reports of Injury (SROI) submitted electronically by claims administrators and their trading partners.
The business and technical standards for these transactions are determined by a combination of the International Association of Industrial Accident Boards and Commissions’ (IAIABC) IAIABC EDI Implementation Guide for First, Subsequent, Acknowledgment Detail, Header, & Trailer Records, Release 1 and the California EDI Implementation Guide for First and Subsequent Reports of Injury (FROI/SROI), Version 3.1.
In accordance with the business rules and technical requirements in these two guides, WCIS records for analysis of data quality the transaction acknowledgments that are generated for each data submission.
In WCIS, every FROI/SROI transaction is acknowledged with one of three acknowledgments:
- TA = Transaction Accepted
- TE = Transaction Accepted with Error
- TR = Transaction Rejected
If the transaction receives a TE or a TR, the acknowledgment also details which data element (DN) created the TE or TR, and what the error was. The tables and reports below provide information on the overall WCIS FROI/SROI data quality by year.
2025 Statewide Data Quality
Total Acknowledgment Records: 4,523,881. Total Unique JCN Acknowledgment Records: 1,747,708
| Accept (TA) | Accept with errors (TE) | Reject (TR) | Total Acknowledgment records* | |
|---|---|---|---|---|
| FROI | 1,657,241 | 159,170 | 55,551 | 1,871,962 |
| SROI | 2,448,671 | 127,242 | 76,006 | 2,651,919 |
| FROI+SROI | 4,105,912 | 286,412 | 131,557 | 4,523,881 |
| FROI XMIT UID | Accept (TA) | Accept with errors (TE) | Reject (TR) | Total Acknowledgment records* |
| FROI | 89% | 9% | 3% | 100% |
| SROI | 92% | 5% | 3% | 100% |
| FROI+SROI | 91% | 6% | 3% | 100% |
Note: Totals and percentages may not always add up due to rounding.
* Acknowledgment Records represent total count of TA, TE, TR reported to the WCIS by all Trading Partners.
Each record of acceptance (TA, TE) or rejection (TR) is counted in the validation process.
2025 Top 10 FROI DNs and Error Messages (TRs)
| DN | DN NAME | ERROR | MESSAGE | 2025 REJECT (TR) (#) |
|---|---|---|---|---|
| 2 | Maintenance Type Code | 48 | Duplicate First Report (148) | 27,701 |
| 6 | Insurer Fein | 39 | No match on database | 9,280 |
| 5 | Jurisdiction Claim Number | 39 | No match on database | 8,137 |
| 2 | Maintenance Type Code | 61 | Event Criteria not met | 3,297 |
| 52 | Employee Date of Birth | 29 | Must be a valid date (CCYYMMDD) | 3,244 |
| 52 | Employee Date of Birth | 39 | No match on database | 1,509 |
| 31 | Date Of Injury | 39 | No match on database | 1,121 |
| 6 | Insurer Fein | 28 | Must be numeric (0-9) | 414 |
| 5 | Jurisdiction Claim Number | 1 | Mandatory field not present | 253 |
| 14 | Claim Administrator Postal Code | 32 | Must be valid on Zip Code Table | 186 |
2025 Top 10 FROI DNs and Error Messages (TEs)
| DN | DN NAME | ERROR | MESSAGE | 2025 ACCEPT with ERRORS (TE) (#) |
|---|---|---|---|---|
| 33 | Postal Code of Injury Site | 32 | Must be valid on Zip Code Table | 37,864 |
| 59 | Class Code | 14 | Class Code (WCIRB) Invalid | 30,268 |
| 25 | Industry Code | 15 | Industry Code (SIC or NAICS) Invalid | 23,170 |
| 42 | Employee Social Security Number | 28 | Must be numeric (0-9) | 12,662 |
| 60 | Occupation Description | 1 | Mandatory field not present | 9,211 |
| 40 | Date Reported to Employer | 29 | Must be a valid date (CCYYMMDD) | 8,736 |
| 16 | Employer FEIN | 28 | Must be numeric (0-9) | 8,077 |
| 16 | Employer FEIN | 64 | Invalid data sequence/relationship | 6,824 |
| 23 | Employer Postal Code | 32 | Must be valid on Zip Code Table | 4,669 |
| 37 | Cause of Injury Code | 8 | WCIO Cause of Injury Code Invalid | 3,003 |
2025 Top 10 SROI DNs and Error Messages (TRs)
| DN | DN NAME | ERROR | MESSAGE | 2025 REJECT (TR) (#) |
|---|---|---|---|---|
| 2 | Maintenance Type Code | 63 | Invalid event sequence/relationship | 26,658 |
| 85 | Payment/Adjustment Code | 61 | Event Criteria not met | 21,886 |
| 6 | Insurer Fein | 39 | No match on database | 9,197 |
| 5 | Jurisdiction Claim Number | 39 | No match on database | 4,018 |
| 88 | Payment/Adjustment Start Date | 34 | Must be >= Date of Injury | 3,210 |
| 31 | Date Of Injury | 39 | No match on database | 2,741 |
| 15 | Claim Administrator Claim Number | 39 | No match on database | 2,301 |
| 86 | Payment/Adjustment Paid to Date | 28 | Must be numeric (0-9) | 1,748 |
| 3 | Maintenance Type Code Date | 41 | Must be <= Current date | 1,399 |
| 73 | Claim Status | 17 | Claim Status Code Invalid | 646 |
2025 Top 10 SROI DNs and Error Messages (TEs)
| DN | DN NAME | ERROR | MESSAGE | ACCEPT with ERRORS (TE) (#) |
|---|---|---|---|---|
| 78 | Number of Permanent Impairments | 62 | Required segment not present | 98,196 |
| 2 | Maintenance Type Code | 63 | Invalid event sequence/relationship | 7,415 |
| 62 | Wage | 28 | Must be numeric (0-9) | 6,717 |
| 63 | Wage Period | 11 | Wage Period Code Invalid | 6,107 |
| 56 | Date Disability Began | 29 | Must be a valid date (CCYYMMDD) | 3,214 |
| 71 | Return to Work Qualifier | 20 | Return to Work Qualifier Code invalid | 2,585 |
| 72 | Date of Return/Release to Work | 29 | Must be a valid date (CCYYMMDD) | 1,615 |
| 56 | Date Disability Began | 37 | Must be <= Maintenance Type Code date | 255 |
| 57 | Employee Date of Death | 29 | Must be a valid date (CCYYMMDD) | 242 |
| 56 | Date Disability Began | 34 | Must be >= Date of Injury | 106 |
| Report Year | Report Group | Table Number | Table Name |
|---|---|---|---|
| 2025 | Annual Aggregate Data Quality Reports | 8 | Data quality - Acknowledgments by TA, TE and TR |
| 2025 | Annual Aggregate Data Quality Reports | 8a | Data quality - Acknowledgments by error message |
| 2025 | Annual Aggregate Data Quality Reports | 8b | Data quality - Acknowledgments by data element |
| 2025 | Annual Aggregate Data Quality Reports | 8c | Data quality - Acknowledgments by error message, data element |
| 2025 | Annual Aggregate Data Quality Reports | 8d | Data quality - Acknowledgments by data element, error message |
| 2025 | Annual Aggregate Data Quality Reports | 8e | Data quality - SROI sequencing transactions, 063 Error Code |
August 2026