Hi @raman_mehta90,
Though I did not had a much chance to work on Campaign Email's but faced this similar issue - attached the thread here [0]:
- The campaign-property-modification-service is a service user which is used for modifying properties of campaign newsletter on copy and paste function.
- This user campaign-property-modification-service should have read and modify permissions on the content folder.
- If it doesn’t have read and modify permissions on the content folder, it can’t clean up the cq:acLinks and cq:acUUID properties of the copy-pasted site template.
After providing the necessary permissions to user, the properties will be cleaned up.
For more details please check article [1].
[0]: https://experienceleaguecommunities.adobe.com/t5/adobe-experience-manager/aem-campaign-email/td-p/45...
[1]: https://experienceleague.adobe.com/docs/experience-cloud-kcs/kbarticles/KA-19344.html%3Flang%3Dsv
Hope that helps!
Regards,
Santosh