In addition to the automapping option there are several tips and tricks that ease and accelerate the input and output data mapping.
Using the Plus Mapping
If the data types of the input/output and the process context data under a superordinate node are the same, you can map the superordinate nodes, for example, you can do the mapping on data object level. A mapping with a plus is displayed. To display all mappings under this node, click the plus.