What is the ruling regarding an 'Umrah that was not completed during childhood, given that one does not remember what was accomplished of it?

If you entered into ihram for 'Umrah as a child but did not complete it, then according to Abu Hanifa and Ibn 'Uthaymeen, nothing is required of you now. However, the majority of scholars hold that you must refrain from the prohibitions of ihram and return to complete it. If you are unsure whether you performed the Tawaf and Sa'i, you must perform them. Regarding the prohibitions of ihram you committed: for those that involve destruction, such as cutting hair and trimming nails, there is one fidyah for each type. For those that involve luxury, such as wearing tailored clothes and using perfume, there is nothing due if you were ignorant. A marriage contract entered into before exiting ihram is void according to the majority of scholars, and it must be redone. If sexual intercourse occurred out of ignorance, it does not invalidate the 'Umrah according to many scholars.