helperContext

Defines the helper execution context that the Service Data Objects (SDO) operation requires.

inputSdo

Specifies the Service Data Object that represents the business entity, including parent and child records.

inParams

Specifies input properties from the previous request and directly depends on the defined service phase within the external call. The inParams parameter can also include the outParams parameters from a previous call.

For example, validateOnly is an input property, that indicates to perform validation at a parent record, child record, or business entity level.

The validateOnly property can have the following values:

true. Performs validation for a parent or child record. For example, you can specify this property to validate 10 telephone numbers individually.
null or false. Performs validation at a business entity level. For example, you can specify this property to perform validation for the business entity when a user saves the record.

Another example is the servicePhase property that specifies the name of the external call.

outParams

Adds or overwrites the supported inputSdo and the inParams parameters. For example, an external call that includes the Merge_CO_Before_Everything event might update the keysAndOverrides parameter to add more business entity keys or remove keys for a merge.

null. When there is no data change in the inputSdo parameter.
The modified inputSdo parameter. When there is a data change in the inputSdo parameter and you want to reflect the change in the business entity.

public class ValidateOrgWriteBeforeEverything implements CustomLogic {
    @Override
    public DataObject process(HelperContext helperContext, DataObject inputSdo,
            Map<String, Object> inParams,
            Map<String, Object> outParams) throws StepException {
                      // your implementation
                      return null;
                                //or
                      return inputSdo;
            }
     }