What are the necessary conditions to prove entitlement to the value of a promissory note claimed to be against custody, and what are the factors that may negate this entitlement?

To prove entitlement to the value of a promissory note claimed to be against custody, the claimant must submit evidence proving a deficiency or damage in the entrusted property. This entitlement may be negated by the existence of a prior discharge or by the acknowledgment of both parties of the existence of force majeure events that led to the non-fulfillment of the purpose of the custody.