This statement is correct. An uncorrelated account is a source account that Identity Security Cloud has been unable to associate with an existing identity by using the configured account-correlation criteria. SailPoint provides a supported manual-correlation process for resolving these accounts.

From the source's Uncorrelated Accounts area, an administrator can select Download Correlation File to obtain a CSV containing the uncorrelated accounts. The administrator then adds the appropriate identity Account IDs to the designated userName column beside each account that needs to be correlated. After saving the modified CSV, it can be uploaded back through the Uncorrelated Accounts page. Identity Security Cloud processes the file and creates permanent manual associations between the specified source accounts and identities.

Manual correlation differs from ordinary correlation rules because a manually correlated account remains attached to that identity even if source attributes later change. To associate it with another identity, the manual correlation must first be removed or explicitly changed.

Therefore, the download-edit-upload procedure described in the proposed statement is an officially supported method.

Study Guide Reference: Identity and Lifecycle Management — Account Correlation, Uncorrelated Accounts, Manual Correlation and Identity Assignment.