Existing Wording
Transaction = POST https://example.com/path/

Comments
Is something missing, such as the name or ID of a bundle? Later, the detailed description of Transaction says that the content of a Post submission is a bundle. But there is also a POST submission to Create an individual resource, which is identified in that interaction. So how is the content of a Transaction Post specified?

Grahame's Comments
make it clearer that it's a different path