There are a few limitations to using sequences in Laravel factories:
1. Sequences are applied in order: The sequence values are applied to the models in the order they are defined. If you need more complex logic for assigning values, you may need to use a different approach[1].
2. Sequences cannot be used with dynamic attributes: If you need to generate dynamic attribute values based on the model instance being created, sequences may not be sufficient. In those cases, you would need to use a closure or another method to generate the dynamic values[1].
3. Sequences are limited to overriding values: The primary purpose of sequences is to override specific attributes of the models being created. They are not designed for more complex model generation logic[1][3].
4. Sequences are not available in all versions of Laravel: The `sequence` method was introduced in Laravel 8.x. If you are using an older version of Laravel, you may not have access to this functionality[2].
Despite these limitations, sequences can still be a useful tool for simplifying model creation in many common scenarios. By allowing you to override specific attributes, sequences can help make your factory definitions more concise and readable[3].
Citations:[1] https://laracasts.com/discuss/channels/laravel/factory-definition-sequence
[2] https://laravel.com/api/8.x/Illuminate/Database/Eloquent/Factories/Factory.html
[3] https://www.youtube.com/watch?v=NHgF1BRma-w
[4] https://typeoverflow.com/developer/docs/laravel~9/api/9.x/illuminate/database/eloquent/factories/sequence
[5] https://laracasts.com/discuss/channels/laravel/dealing-with-difficult-factories