How do you autogenerate a sales invoice against a subscription?

I have a series of items in the stockkeeping module, and many of them are sellable to customers as subscription items. Therefore, I have some subscription plans against those items as well.

I want to test the functionality by creating a subscription for a dummy customer that autogenerates a sales invoice as soon as it gets created as active.

This section of the docs suggests that all you have to do is set the “Generate Invoice At” field (associated with the DocType for the subscription) as “Beginning of Period”, but that’s not working for me.

I’m confused about whether I’m understanding the docs correctly and, if so, what I’m doing wrong. Any help will be appreciated!

Please check this video.

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