Legal analysis: After an electronic bank acceptance bill is endorsed, you can cancel it before the recipient does anything, but if the recipient does something, you can't cancel it.

legal basis: article 49 of the civil code of the people's Republic of China

if the parties conclude a contract in the form of a contract, the contract shall be formed when all the parties sign, seal or fingerprint it. Before signing, sealing or fingerprinting, one party has fulfilled its main obligations, and the contract is established when the other party accepts it.

article 577 if a party fails to perform its contractual obligations or fails to perform its contractual obligations in conformity with the contract, it shall be liable for breach of contract, such as continuing to perform, taking remedial measures or compensating for losses.