I recently discovered an issue with my effective date on the company portal, which is showing as March 2024 for my current role. I started working for the company in 2013, and after the acquisition in 2023, I transitioned to my new position around August 2023. I'm currently waiting for HR to respond to my inquiry about correcting this date. The timing is crucial since I have an offer letter coming in soon and I'm also in the running for a second offer next week. My resume lists my current position starting in 2023, but this 6-month discrepancy could be significant. I'm worried that this might affect the background check process. If HR can't resolve this, I'm not sure what my next steps should be. I don't have substantial proof of my start date other than a salary increase, and the nature of my previous role makes it clear I couldn't have been in that position until March 2024. I'm seeking advice on how to navigate this situation and whether I can adequately explain the discrepancy if it arises.