How To Fix APO_BAPI136 - Unknown error when calling up RFC function &1 with destination &2

APO_BAPI136 - Overview

• Message type: E = Error

• Message class: APO_BAPI - Message Class for APO BAPIs

• Message number: 136

• Message text: Unknown error when calling up RFC function &1 with destination &2

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 APO_BAPI136 - Unknown error when calling up RFC function &1 with destination &2 ?

  The SAP error message APO_BAPI136 indicates that there is an unknown error occurring when trying to call a Remote Function Call (RFC) function with a specified destination. This error can arise in various scenarios, particularly in the context of SAP Advanced Planning and Optimization (APO) or when integrating with other SAP systems.
  Possible Causes:
  
  Network Issues: There may be network connectivity problems between the systems involved in the RFC call.
  Destination Configuration: The RFC destination may not be correctly configured in the SAP system. This includes issues with the connection parameters, such as the target system's IP address, port, or logon credentials.
  Authorization Issues: The user executing the RFC call may not have the necessary authorizations to access the target function module.
  Function Module Issues: The function module being called may not exist, may be inactive, or may have been changed or deleted.
  System Performance: The target system may be experiencing performance issues, leading to timeouts