A device that is an SR Storage SOP Class SCU may modify information in a SOP Instance which it has previously sent or received. When this SOP Instance is modified and sent to an SCP, it shall be assigned a new SOP Instance UID if any of the following conditions are met:
addition, removal or update of any attribute within the SR Document General Module or SR Document Content Module;
modification of the Series Instance UID (0020,000E);
modification of the Study Instance UID (0020,000D).