[Koha] Duplicate ID

[Davide Spanu]

Good evening,

we are starting to use the koha catalog for loans and we realized that when
checking out of the copy after booking, when entering the copy code, the
system generates this error:

 


Software error:

Duplicate ID

For help, please send mail to the webmaster, giving this error message and
the time and date of the error.

 

 

Is there a way to correct this problem?