The Update operator supports enhanced LOB functionality in TPT script mode.
The operator does not support enhanced LOB functionality in TPT API mode.
When the TPT job has one or more LOBs (inline or deferred) and the schema size is greater than 1 MB, the Update operator will use 1 MB message size for sending data to the database. The database has a limit of 1 MB message size for such jobs in the Extended MultiLoad protocol.
For more information, see Enhanced LOB Support.