To combine two or more entities into a single layer of the same geometry type (points, lines, or polygons), the “Merge” tool can be used. It is important to note that this tool does not modify the geometry of the original features, even when overlaps occur. The “Merge” tool is located by navigating to:
Geoprocessing > Toolboxes > Data Management Tools > General > Merge
Tool Configuration
Within the “Input Dataset” section, all the layers intended to be combined should be selected. For example, layers named “merge_1” and “merge_2” can be added.
In the “Output Dataset” section, assign a name and choose a directory where the resulting merged layer will be saved.
The “Field Map” section provides the ability to manage the attribute fields. Users can add, rename, or remove fields from the participating layers to ensure consistency and relevance in the merged output.
Configuration of the tool “Merge”.

After the tool is configured and executed, the output will be a single feature layer that includes all the entities from the input layers, preserved in their original geometry.
Merging of two vector layers of the same geometry.
