Incorrect P87

Good evening, 

I'm hoping someone will be offer to some assistant. I submitted my P87 with expenses from work while on holiday via an accountant upon returning home, I got a letter from HMRC asking for evidence. This is completely fine i've a receipt of all my hotel stays, uniform costs etc except I noticed id stupidly sent the wrong tax years hotel costs to the accountant completely forgetting tax year v financial year which had been submitted. I'm wondering what's the best course of action? Do I call HMRC tomorrow and apologise for my extremely rookie error and start again for a 21/22 and 22/23 submission.
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