"It seems the sphere doesn't supply details, neither within the "Operation Errors" nor around the "Reject leads to" which can be detailed within the report" Now, as for your question: "on" works, and so does "about". Also, you might try "for". Or "of". It doesn't genuinely make a difference. mgbmgb https://landenc45j5.blog-mall.com/31570764/the-cost-diaries