How To Fix CY689 - Communication error occurred in the planning table.

CY689 - Overview

• Message type: E = Error

• Message class: CY - Capacity Requirements Planning

• Message number: 689

• Message text: Communication error occurred in the planning table.

What causes this issue?

An error has arisen in the communication between the program and the
planning table.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

You should contact your system administrator. You can may be able to
find the direct cause in the syslog.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CY689 - Communication error occurred in the planning table. ?

  The SAP error message CY689, which states "Communication error occurred in the planning table," typically indicates an issue with the communication between the SAP system and the planning table interface. This can occur in various scenarios, such as during the execution of planning functions or when trying to access planning tables in SAP APO (Advanced Planning and Optimization) or other modules.
  Causes:
  
  Network Issues: There may be network connectivity problems between the SAP application server and the client or between different SAP systems.
  Session Timeout: The session may have timed out due to inactivity, leading to a communication breakdown.
  
  Configuration Issues: Incorrect configuration settings in the planning table or in the SAP system can lead to communication errors.
  System Performance: High system load or performance issues can cause delays or failures in communication.
  Authorization Issues: Lack of proper authorizations for accessing the planning table can also trigger this error.
  Software Bugs: There may be bugs in the