Uploading/Attaching Multiple Tags for a document record via HDL

Summary:

We have one requirement to add multiple tags for a document record. However, when we are are passing multiple tag values separated by comma under the TagList column (HDL file), it is throwing unknown value error. We cross the checked the Tag list lookup and the codes are matching with the value.

Also when we tried to pass the same values in a separate file, instead of appending, it is overwriting the old tag with the latest tag file value on the document records.

Any option to handle multiple tags for documents record via HDL ?

Single File:

METADATA|DocumentsOfRecord|PersonNumber|DocumentType|DocumentCode|AssignmentNumber|DocumentName|DocumentNumber|DateFrom|DateTo|IssuedDate|IssuingAuthority|IssuingCountry|IssuingLocation|Publish|PublishDate|Comments|TagList