If the system accepted the input as just plain "72500", I'd say you did it correctly that way. I can't speak to Comenity itself, not having (currently) any cards with them, but these systems, not just income input, can be pretty finicky about how you should input the requested values, text or other data. A lot of times, for example, they won't take certain punctuation characters which can be irksome if you regularly use those in your writing! 
Thanks
I dont know why I like to make things harder than they are ..lol I get stuck on it needing that comma and decmil and obsess over it..lol
@Anonymous wrote:If the system accepted the input as just plain "72500", I'd say you did it correctly that way. I can't speak to Comenity itself, not having (currently) any cards with them, but these systems, not just income input, can be pretty finicky about how you should input the requested values, text or other data. A lot of times, for example, they won't take certain punctuation characters which can be irksome if you regularly use those in your writing!
Oh how right you are. Yesterday, I sent Macy's a SM and it kept rejecting it stating that there was an unacceptable character. So I made sure "&" was typed "and" and it still rejected it. I looked over my <10-word SM and just couldn't figure out what character was unacceptable. Then, a light bulb went off. Well lo and behold, the apostrophe in Macy's was the culprit. Ridiculous, that's how Macy's spell its own darn name. 