ID already Exist still infopath form is not updated

Question

Hi,

 

i am able submit infopath form and after submiting reflected all details saving in library.

 

i am trying to implement like if ID is already exist in library then it would be update the detail instead of new item entry.

 

When i trying to some changes and submit it  that tym getting error:

 

"The form cannot be submitted to the specified SharePoint document library. The document library already contains a file with the same name. A value in the form may be used to specify the file name. If you know what that value is, modify it and try submitting the form again.

An entry has been added to the Windows event log of the server."

 

so, i checked my submit data connection and given correct file name and checked "Allow overwrite all exist file". but still when i submit getting same above error.

 

Thanks