Accenture India — documents issue related name.

My name is richa. I don't have last name and while filling the application form of accenture last name was mandatory. Due to which i have to put my father's title as my last name. It was verified by verification team of accenture during online test that my title matches with my father's title. And it is acceptable to write father's title if anyone do not have title which was told by accenture verification team also. When i got a mail to upload my documents after getting hired though campus drive my name came auto filled as richa singh and in identity details i provided my pan card holding my name richa as written in each and every document of mine. When i submitted, it generated a pop up stating my name on form and pan card does not match you want to agree and continue, so i continued. And as it was mandatory to fill last name inspite of i don't have it so i took my father's title. So what should i do next so that my documents are not rejected during verification. Please suggest me for my further steps so that my documents are verified without any rejection.