TYPO3 remove "copy 1" text

Question

I use TYPO3 version 8.7.10. I am trying to remove "copy 1" text when I copy the content.

I have tried:

TCEMAIN.table.pages {
    disablePrependAtCopy = 1
    disableHideAtCopy = 1
}

TCEMAIN.table.tt_content {
    disablePrependAtCopy = 1
    disableHideAtCopy = 1
}

Not successfully

Answer 1

Did you enter those values to Typoscript-Setup or the Page TSConfig of the Root Page? It belongs to the TSConfig in the page configuration.