Suppose Zayd possesses an item and Amr claims Zayd sold it to him. A judgment accepting Amr’s claim would restrict Zayd’s recognized right to deal with the property.
That is a dispute, not a simple commercial notification. The very proof that would establish Amr’s entitlement would impose an adverse legal consequence on Zayd. Accordingly, the relaxed standard used for ordinary non-adversarial dealings should not be transferred to it.
A party’s allegation and legally sufficient court evidence are not the same. Where the required rules of testimony are met, a claim can be enforced; merely making an allegation does not justify ruling against another person’s property.