"ERROR: [1656-191-10-00000000] Custom attribute definition file not found, path =" (4212294)

During migration, the following error may be observed in the log file:

[1656-191-10-00000000] Custom attribute definition file not found, path = C:\Program Files x86\Dell\Migrator for Notes to Exchange\customattrs.tsv

Also associated with this message: [1651-191-9-00000000] Standard attribute definition file found, path =

The Data Migration Wizard and SSDM can migrate custom Notes attributes to unused properties in the MAPI target mailboxes, but only if the migration app knows which properties in the target correspond to which attributes in the source. The migration of custom attributes therefore requires that an admin map these source-to-target attribute associations in a tsv data file, before the migration, so the migration apps can refer to that file to migrate the attributes.

The attribute-mapping file must be a unicode (not ANSI) file named customattrs.tsv, in the default installation folder for the Data Migration Wizard (typically C:\Program Files x86\Dell\Migrator for Notes to Exchange), or in the folder containing notesdtapp.exe if you want to migrate Notes custom attributes via the SSDM. MNE (Migrator Notes to Exchagne) installs a unicode attrs.tsv file, with the same column headings required for customattrs.tsv, that you can use as a template to create the customattrs.tsv file.

Please consult the MNEAdministrationGuide.pdf section which is titled "How Do I Migrate Notes Custom Attributes"

Use a text editor to open attrs.tsv, and save the open copy under the new name customattrs.tsv. Make sure you save customattrs.tsv as a unicode (not ANSI) file, in the folder(s) as noted above, and delete any data rows that may appear in the copy.