The most common and most likely answer to this crossword clue is the 7 letter word INVITED
I
N
V
I
T
E
D
Buddy explains!

The straight part
We know that "Requested" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case requested = invited.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does INVITED mean?
INVITED verb- To ask for the presence or participation of someone or something.
- To request formally.
- To encourage.
- To allure; to draw to; to tempt to come; to induce by pleasure or hope; to attract.
- Having been asked to attend.
- Having an invitation.