correction seal; revision seal
A special seal used to mark corrections on official documents, such as contracts or government forms, to indicate that the change is authorized.
Please be sure to affix a correction seal on any corrected parts of the contract.
There was a mistake on the document to be submitted to the government office, so I corrected it by stamping a correction seal.
Compound of 訂正 (correction) and 印 (seal). The term is transparently derived from its components.