How To Fix E0558 - Error in internal number assignment for tRFC ports

E0558 - Overview

• Message type: E = Error

• Message class: E0 - SAP EDI messages

• Message number: 558

• Message text: Error in internal number assignment for tRFC ports

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 E0558 - Error in internal number assignment for tRFC ports ?

  The SAP error message E0558, which states "Error in internal number assignment for tRFC ports," typically occurs in the context of the transactional Remote Function Call (tRFC) mechanism in SAP. This error indicates that there is an issue with the internal number assignment for the tRFC ports, which can affect the communication between different SAP systems or between an SAP system and external systems.
  Causes:
  
  
  Configuration Issues: Incorrect configuration of the tRFC ports in the SAP system can lead to this error. This includes issues with the RFC destinations or the logical system settings.
  Database Issues: Problems with the underlying database, such as corruption or inconsistencies in the tables that manage the tRFC ports, can trigger this error.
  Transport Layer Issues: If there are issues with the transport layer or if the transport directory is not correctly set up, it can lead to this error.
  System Resource Limitations: If the system is running low on