https://www.taxtmi.com/forum/issue?id=120920 An ESIC monthly contribution filing may trigger an "Invalid IP Numbers" error where the employee insurance number is incorrectly entered, not properly mapped, not successfully generated, or does not match ESIC database records. The issue commonly arises during new joinee onboarding, first-time contribution upload, employee rejoining, or bulk CSV/ECR filing, and the employer must ensure that the IP number is active, correctly recorded, and present in the ESIC system before re-uploading the contribution file. The suggested rectification steps include verifying that the employee registration process is complete, including Aadhaar authentication and generation of the TIC/e-Pehchan card, and confirming that employee particulars exactly match ESIC records. Where the employee was previously employed, the existing IP number should be used rather than a fresh registration. en-us Fri, 15 May 2026 14:45:50 +0530 Fri, 15 May 2026 19:42:00 +0530 TaxTMI RSS Generator https://www.taxtmi.com/forum/issue?id=120920 An ESIC monthly contribution filing may trigger an "Invalid IP Numbers" error where the employee insurance number is incorrectly entered, not properly mapped, not successfully generated, or does not match ESIC database records. The issue commonly arises during new joinee onboarding, first-time contribution upload, employee rejoining, or bulk CSV/ECR filing, and the employer must ensure that the IP number is active, correctly recorded, and present in the ESIC system before re-uploading the contribution file. The suggested rectification steps include verifying that the employee registration process is complete, including Aadhaar authentication and generation of the TIC/e-Pehchan card, and confirming that employee particulars exactly match ESIC records. Where the employee was previously employed, the existing IP number should be used rather than a fresh registration. Discussion-Forum Indian Laws Fri, 15 May 2026 14:45:50 +0530 https://www.taxtmi.com/forum/issue?id=120920