This phrase is correct and usable in written English.
You can use it when you need to explain or elaborate on a certain topic in order to make something clearer. For example: "For clarification regarding the proposed project schedule, please refer to the attached document."
"We've also asked for clarification regarding Facebook's community standards; specifically, whether we can continue to promote academic titles on the PKK, post maps and images of Kurdistan, refer to Abdullah Öcalan and make posts that may contain criticism of the Erdoğan government on Facebook.
On the other hand, four faculty members asked for clarification regarding the type of article that ENGLCOM students would critique.
I've asked Proper for clarification regarding a few of the claims made in its statement, in lieu of simply repeating them here.
The blogger had emailed Microsoft looking for clarification regarding some of the software that he had received from the internal source.
Cruz's office did not respond to requests for clarification regarding the senator's reference to "hard sciences".
Once the press conference resumed, Blatter addressed calls for clarification regarding his resignation.
Libya said on Sunday it has asked the United States for "clarifications" regarding the abduction of Liby.
The participants could ask the clinical psychiatrist for clarifications regarding the meaning of the questions and then filled out the questionnaires themselves.
Where possible, participants were contacted either through telephone or electronic mail for clarifications regarding questionnaires that were returned with missing or conflicting data.
If there is need for clarifications regarding the questionnaire or follow-up to assess the impact of the questionnaire on the participant and potential distress, and provided the participant has agreed to be contacted and provided contact details, a member of the research team makes contact to arrange a telephone interview.
Representatives of Day and Spieth did not respond to the Guardian's request for outright clarification regarding Olympic status, with both believed to be wavering.
