Upload Failed! (Realms ( ErrorCode: 6004 ): Upload Limit Reached)

I know this might not be a bug but when i try to upload my World To Realms It says "ErrorCode: 6004: Upload Limit Reached" I have no idea what this bug is or if it is ever a bug however it does seem like lines of code.
This only happens when I try to upload my world 3 times in a time limit it seems however it is VERY VERY annoying especially when i am trying to change my map ever so often so me and my friend can play. I hope you fix this cause I find it very irritating