Executing FastLoad Protocol on TPT with Flat files with VARIABLE COLUMN NUMBERS - response (1) by feinholz

What version of TPT are you using?
TPT supports "long" rows and "short" rows.
If you provide a schema in the TPT script that matches the target table, you can then specify "AcceptMissingColumns" and for those records that have fewer fields than the schema, the DataConnector operator will append extra NULL columns.
Of you can provide a schema that has N-2 columns and then use the "AcceptExcessColumns" for the DataConnector operator, and the operator will ignore the extra fields in the input records.