Often, when attempting to save data for a collection group using the collections application, under the path /admin/a and attempting to Save Group, the user will, in cases of large catalogs (large amount of categories, brands, products), face a timeout error message and won't be able to save their changes.

This also can happen for the new collections module.

Simulation

1. Go to the CMS UI application using a store that has a large catalog base, for instance, >10000 products.
2. Go to "Product Clusters (Collections) and select "new group"
3. Create a group and then select a few checkboxes in the form
4. Attempt to save these changes
5. If the request takes longer than 50 seconds to save, which is often the case in accounts with a large amount of data, the request will be stopped by and the data will not be saved.

Workaround

Using our collections API endpoints: https://developers.vtex.com/docs/api-reference/catalog-api#post-/api/catalog/pvt/collection?endpoint=post-/api/catalog/pvt/collection, however, it is important to note that in some cases, where there's a large amount of data being updated, the timeout may still occur via API.