CMMVC3510E `The password entered is not valid. Invalid password length. Type a string of 6 - 8 ASCII characters that is composed of any of the following characters: a-z, A-Z, 0-9, -, ., /, or _.`

Explanation

The password contains either too many or not enough characters.

Enter a string of 6 to 8 ASCII characters that is composed of any of the following characters: a-z, A-Z, 0-9, -, ., /, or _.
The first character cannot be a number.