Definitions of indebtedness
the state of being grateful to someone for something they have done; the state of having relied on, or having been inspired by, someone or something
While Dvořák's Sixth is a confident, colourful and entirely characteristic work, its indebtedness to Brahms's Second is clear, especially in the finale.
the state of owing money to a person, business, organisation or other entity
The company accounts over the previous four years had not shown the true state of its huge indebtedness.