I'm so upset and anxious about it as I genuinely didn't think I may have made a mistake so honestly thought it was colleagues mistake. Basically a message was passed on to staff member who informed me of the information. However I must have mis heard her or not heard the important part of the message so I failed to pass it onto the rest of the team which caused a bit of disruption during the day. I'm hoping it won't lead to any complaints. I honestly didn't register what she said and it's only now through replaying the conversation that I kind of realised maybe I misheard her or should have confirmed what she said. We work in a noisey environment and she is quietly spoken plus I was doing something else at the time. I know it seems like a trivia mistake but I feel so guilty that I've initially let her take the blame and that it could be my fault. I'm really anxious about it and kicking myself at such a stupid mistake.