Now it is much clearer. I would advise not to touch that material with a partial goods issue posting.
Partial goods issue would not be right from my point of view as you are not really taking a part of this finished material, you are borrowing a component of that finished material, which probably makes the entire finished material unusable.
As there are many thousand components you can't really express the real decimal equivalent with a goods issue, you will most probably run into rounding issues. And this partial goods issue does not explain which component was removed and the user has to assume that the material is incomplete based on a non-integer quantity.
I would say you should move the full quantity into blocked stock and reorder that taken component with a requisition which is account assigned with cost center.
Once the component is received and installed you can move that material from blocked stock back into unrestricted use.