How To Fix UPS202 - Only inbound packets can be processed

UPS202 - Overview

• Message type: E = Error

• Message class: UPS - ALE Distribution Packet

• Message number: 202

• Message text: Only inbound packets can be processed

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message UPS202 - Only inbound packets can be processed ?

  The SAP error message UPS202 ("Only inbound packets can be processed") typically occurs in the context of the SAP system's communication with the SAP Business Connector or when dealing with the SAP Process Integration (PI) or SAP Process Orchestration (PO) environments. This error indicates that the system is expecting inbound communication packets but is receiving something else, which could be due to various reasons.
  Causes:
  
  Incorrect Configuration: The communication channel may not be configured correctly, leading to the system expecting inbound packets but receiving outbound packets instead.
  Network Issues: There may be network issues causing packets to be misrouted or not delivered correctly.
  Protocol Mismatch: The protocol used for communication may not match the expected protocol, leading to the system rejecting the packets.
  Firewall or Security Settings: Firewalls or security settings may be blocking the inbound packets or altering them in a way that they are no longer recognized as valid.
  Version Compatibility: There may be