“Bhagvati Sutra Tap” as a named, fixed fast (vrat / tapa) is not a standard classical term in Jain scriptures.

To understand this clearly, separate the two words:

1. Bhagavati Sutra (भगवती सूत्र)

- One of the main Śvetāmbara Āgams (Anga-āgams). - It contains deep questions–answers between Gautam Swami and Bhagwan Mahavir on many topics: karma, loka (universe), souls, vows, etc.

1. Tap / Tapa (तप)

- Means austerity / penance done to burn karmas and purify the soul. - Traditionally, Jain scriptures speak of 12 tapas (6 external + 6 internal), not a special “Bhagvati Sutra tap”.

Sometimes in practice, people may:

• Do a particular fast or penance while
• Listening to or studying Bhagavati Sutra,

and call it informally “Bhagvati Sutra tap”. But this is a local / practical name, not a formally defined tap in the main scriptures.

So, in summary:

• In classical Jain texts: there is Bhagavati Sutra (a scripture) and there is tapa (austerity),
• but no specific, standard vrat called “Bhagvati Sutra Tap” is listed like other well‑known fasts (varshitap, ayambil, etc.).

For a simple explanation of the 12 types of tap in Jainism, you can read more here