How To Fix CH156 - No local field names defined - connection not established

SAP Error Message - Details

• Message type: E = Error

• Message class: CH - CAD/PP integration messages

• Message number: 156

• Message text: No local field names defined - connection not established

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CH156 - No local field names defined - connection not established ?

  The SAP error message CH156: No local field names defined - connection not established typically occurs in the context of SAP's data transfer processes, particularly when working with data sources and data targets in the context of data extraction or data loading.
  Cause:
  
  Missing Field Definitions: The error indicates that there are no local field names defined for the data transfer. This can happen if the data source or target is not properly configured.
  Connection Issues: The connection to the data source or target may not be established correctly, which can lead to the system not being able to retrieve or send data.
  Configuration Errors: There may be issues in the configuration of the data transfer process, such as incorrect settings in the Data Transfer Workbench (DTW) or other related tools.
  Authorization Issues: The user may not have the necessary authorizations to access the data source or target.
  
  Solution:
  
  Check Field Definitions: Ensure that the local field names are defined correctly in the data transfer settings. This may involve checking the configuration in the Data Transfer Workbench or the relevant data extraction tool.
  Verify Connections: Make sure that the connection to the data source or target is established. This can involve checking network settings, database connections, and ensuring that the relevant services are running.
  Review Configuration: Go through the configuration settings for the data transfer process to ensure that everything is set up correctly. This includes checking mappings, field definitions, and any transformation rules.
  Check Authorizations: Ensure that the user executing the data transfer has the necessary authorizations to access the data source and target. This may involve checking user roles and permissions in SAP.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on the data transfer process you are using, as there may be additional steps or considerations based on the specific context.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions to common problems.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE11 (Data Dictionary), SE80 (Object Navigator), or ST22 (Dump Analysis) to troubleshoot further.
  Community Forums: Consider visiting SAP Community forums or other user groups where similar issues may have been discussed, and solutions shared.
  
  If the problem persists after following these steps, it may be beneficial to engage with your SAP support team or consult with an SAP expert for more in-depth troubleshooting.