Washer dropped in Distributor/oil pump hole

Long story short, Not paying attention and knocked a small 1/8 spring washer down into the distributor /oil pump hole. ..."Oil pump drive was out as well". Can this washer cause problems by getting into the oil galleys or will it drop down past the camshaft into the oil pan, as per attached pic? What is the fix for this? Not after opinions guys,.... please only reply if you know EXACTLY what needs to be done
Cheers

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