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**Type**: void

**Parameters**

NameTypeValue
sessionIdStringID of the session
recipientListIdlongID of the recipient list
recipientIdsString[ ]IDs of the recipients
attributeNamesString[ ]Names of the fields (e.g., firstname, lastname etc.) to be updated
flatAttributeValuesString[ ]New values for the attributes/fields defined with **attributeNames**<br><br>Each entry must be formatted according to the [formatting rules](🔗).

**Return values**

  • **Code structure**