Tools that honor the Preserve Global IDs environment will reuse the Global ID values of the existing input dataset when appending rows to a target dataset.
- The Preserve Global IDs environment is useful for workflows in which the Global ID value for the row is required to stay the same when exporting or appending data.
- For the Append tool, this environment only applies to enterprise geodatabase data and will only work on data that has a Global ID field with a unique index. If the Global ID field does not have a unique index, the tool may fail. To add a unique index to your Global ID field, you can use the Add Attribute Index tool.
- Checked—The operation will preserve the existing Global IDs.
- Unchecked—The operation will not preserve the Global IDs of features and will instead create new IDs. This is the default.
arcpy.env.preserveGlobalIds = boolean_option
If True, the operation will preserve the existing Global IDs.
If False, the operation will not preserve the existing Global IDs of features and will instead create new IDs. This is the default.
import arcpy # Set the preserveGlobalIds environment to True arcpy.env.preserveGlobalIds = True