Hi @Biswa! I tried various ways of getting a unique id for each array. Most of them failed. But, I tried to append the array index to the unique id. Even while doing it, I faced many issues. See if the below spec is okay [ { "operation": "shift", "spec": { "aliases": { "*": { "@0": "alias[&1].name", "$0": "alias[&1].id.${UUID()}-&1" } } } }, { "operation": "shift", "spec": { "alias": { "*": { "id": { "*": { "$0": "alias[&3].id" } }, "*": "alias[&1].&" } } } } ]    ... View more

May be it will be useful for someone. I used searchValue as "\p{C}" and ReplaceValue as empty String \p{C}  finds all non-printable characters. ... View more