A singleton error refers to an issue that occurs when attempting to create multiple instances of a class or object that is designed to have only one instance throughout the lifetime of an application. Singletons are commonly used in software development to ensure that there is only one instance of a particular object or class that can be accessed globally.

1. How to Solve Singleton
Error in Odoo 17
Enterprise

2. Introduction
Enterprise
A singleton error refers to an issue that occurs when
attempting to create multiple instances of a class or object
that is designed to have only one instance throughout the
lifetime of an application. Singletons are commonly used in
software development to ensure that there is only one instance
of a particular object or class that can be accessed globally.

3. Enterprise
● We can go to the python page of custom module. Here
we created a custom module and fields inside module.

4. Enterprise
● Here we had created a compute function for the field
phone were we need to get the value from the view of
custom module.
● When we try to run this we get an error message

5. Enterprise
● In the compute function we can see that , in self there is
a set of records. So we need to iterate the set of records
in the self.

6. Enterprise
● After this change we can run this code and can see that
the error is gone.

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