# Limitations and considerations

When using SAP ODP as a source, the following limitations apply:

## Limitations and considerations for all data tasks

* The SAP ODP connector uses the metadata of the ODP node. Consequently, the target tables will be created with these ODP-provided columns.
* Hierarchy objects and columns are not supported.

## Limitations and considerations for replication and landing tasks

* The "Start from timestamp" and "Start from position" options for running tasks are not supported.
* Capture of changes to the source metadata is not supported. In order to replicate changes to the ODP node's metadata, the task must be reloaded.
* The ["Allow unlimited LOB size" and "Optimize handling when LOB size is less than"](https://help.qlik.com/en-US/cloud-services/Subsystems/Hub/Content/Sense_Hub/DataIntegration/Replicating/replicating-settings-metadata.htm) LOB handling options are not supported.