I need to disallow repetitions in insertion

[hayyan]

Would you please help me to know how to force each device make only one insertion into the data or form.

In other words, I need to disallow repetitions in insertion.

Thanks in advane.

[Kal_Lam]

Hi @hayyan,

Welcome to the community! Could you kindly explain your issue in detail so that we are able to support you if it’s doable in KoBoToolbox.

Have a great day!

[stephanealoo]

Hi @hayyan

Could you please look at the discussions that happened here

Is there a way to display an error message when there is a duplicate entry?

Hi As @ks_1 has mentioned, normally there is no way to have the form look up values entered in the previous submissions. This kind of relational database ability is not provided within the forms. Hypothetically speaking you could always create a rule, known to your participants that only one entry would be accepted and you can prefer to explain the one you need e.g. if you make two entries only the first one will be accepted etc. Regards Stephane

Stephane