How To Fix SPRX120 - Canceled: Interfaces must have the same direction in all methods

SPRX120 - Overview

• Message type: E = Error

• Message class: SPRX - Proxy Generation

• Message number: 120

• Message text: Canceled: Interfaces must have the same direction in all methods

Self-Explanatory Message

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SPRX120 - Details

• The SAP error message SPRX120 indicates that there is a mismatch in the direction of interfaces across different methods in a service interface. This typically occurs in the context of SAP Process Orchestration (PO) or SAP Integration Suite, where service interfaces are defined for communication between different systems or components.
  
  Cause:
  The error arises when:
  
  You have defined multiple methods in a service interface, and the direction (input/output) of the interface parameters is inconsistent across these methods.
  For example, if one method has an input parameter defined as "In" and another method has the same parameter defined as "Out," this inconsistency will trigger the error.
  
  
  Solution:
  To resolve the SPRX120 error, you should ensure that all methods in the service interface have consistent parameter directions. Here are the steps to do this:
  
  
  Review the Service Interface: Open the service interface in the SAP development environment (e.g., SAP NetWeaver Developer Studio or SAP Business Application Studio).
  
  
  Check Method Definitions: