# Limitations and considerations

The following limitations apply to the Amazon S3 target endpoint:

* The following DDLs are supported only: Truncate table, Drop table, Create table, Add Column, Rename Column, Drop Column, and Convert Data Type.

* Full LOB Mode is not supported

* UPDATE and DELETE statements are not supported in Apply Changes replication mode

* Batch optimized apply mode is not supported

* Target lookup is not supported

* The <target folder> parameter cannot include special characters

* [](https://help.qlik.com/en-US/replicate/Content/Replicate/Main/Amazon%20S3/limitations_file_targets3.htm)Limitations when using Parquet file format:

  * When the [DDL Handling Policy](https://help.qlik.com/en-US/replicate/May2026/Content/Global_Common/Content/SharedEMReplicate/Customize%20Tasks/tasks_applychangsetstab.htm) for source tables is set to Ignore ALTER, the RENAME COLUMN DDL (on a Primary Key column) is not supported.

  * LOB columns larger than 1 MB are not supported.

* Database names, schema names, or table names containing slash (/) or backslash (\) characters are not supported.
* The following Control Tables are not supported as they require UPDATE/DELETE operations, which are not supported:
  * Replication Status (requires UPDATE).

    Name on target: `attrep_status`

  * Suspended Tables (requires DELETE).

    Name on target: `attrep_suspended_tables`

    For more information on Control Tables, see [Control tables](https://help.qlik.com/en-US/replicate/May2026/Content/Global_Common/Content/SharedEMReplicate/Customize%20Tasks/control_tables.htm).