4cb68544__Capital_One___Credit_Line_FAQ__If_your_letter_says_
[What that means] A key to getting a credit line increase can be your credit score. The higher your credit line is, the higher your score needs to be to qualify for more credit. [What you can do] If you have questions about the personal credit report information contained in the letter we sent, feel free to contact the three bureaus: Equifax, Experian, and Transunion LLC. If you have questions about how to manage credit issues responsibly, or improve your credit, you may find this credit education information useful. [If your letter says:] 
Based on the amount of your current credit line(s) with Capital One, your credit score isn’t high enough to qualify for an increase. Please see the back of this letter for more details on the determining factors that affect your credit score.
Credit Line Increase FAQ | Capital One - Credit Line FAQ
If your letter says: