ValueError: Invalid field 'custom_field_name' on model 'model_name'

Question

Hello,
I am currently facing an issue while attempting to migrate my database, I encountered the following error:
ValueError: Invalid field 'custom_field_name' on model 'model_name'

This error seems to be related to several custom fields, particularly One2many and Many2many fields that I have added in custom modules and it appears in several models. I have thoroughly verified the database, and the data exists. Additionally, there are no issues with the views.
Your help would be truly appreciate

Zachary · Accepted Answer

Two things pop up in my mind, first have you ensured that the module defining the custom_field_name is properly installed and that its dependencies are correctly set up? If your custom field is in a module that extends or depends on other modules, ensure those are loaded first.
Secondly, check the Python model where custom_field_name is defined. Ensure that the field is correctly declared and follows the correct syntax. For One2many and Many2many fields, ensure the relation and inverse names are

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