How To Fix IST_EBS123 - The external doc. no. &1 is too long to be used as an internal doc. no.

SAP Error Message - Details

• Message type: E = Error

• Message class: IST_EBS - Interface Between IS-T and External Billing System

• Message number: 123

• Message text: The external doc. no. &1 is too long to be used as an internal doc. no.

What causes this issue?

The length of transferred document numbers is restricted for external
number assignment.

System Response

The system cannot adopt the external document number that was
transferred as the number of a contract accounting document.

How to fix this error?

Note the length restriction for the following data element:
<DS:DE.OPBEL_KK>Contract account document number</>.
Alternatively, you can set internal number assignment in Customizing
for the interface.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message IST_EBS123 - The external doc. no. &1 is too long to be used as an internal doc. no. ?

  The SAP error message IST_EBS123 indicates that the external document number you are trying to use is too long to be processed as an internal document number. This typically occurs in the context of electronic bank statement processing or similar financial transactions where document numbers are involved.
  Cause:
  The error is caused by the external document number exceeding the maximum length allowed for internal document numbers in the SAP system. Each document number has a defined length, and if the external document number surpasses this limit, the system cannot process it correctly.
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Document Number Length: Verify the maximum length allowed for internal document numbers in your SAP configuration. This can usually be found in the configuration settings for the relevant module (e.g., Financial Accounting).
  
  
  Shorten the External Document Number: If possible, modify the external document number to ensure it fits within the allowed length. This may involve truncating the number or using a different format.
  
  
  Adjust Configuration Settings: If the external document numbers are consistently longer than the allowed length, consider adjusting the configuration settings in SAP to accommodate longer document numbers, if feasible. This may require consulting with your SAP Basis or configuration team.
  
  
  Use a Mapping Strategy: If you cannot change the external document numbers, consider implementing a mapping strategy where you create a shorter internal representation of the external document number that can be used within SAP.
  
  
  Consult Documentation: Review SAP documentation or notes related to electronic bank statements or document number handling for any specific guidelines or recommendations.
  
  
  Contact SAP Support: If the issue persists or if you need further assistance, consider reaching out to SAP support for guidance tailored to your specific system configuration and requirements.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as FF67 (for electronic bank statement processing) and OBPM1 (for bank statement configuration).
  SAP Notes: Search for SAP Notes related to electronic bank statements and document number handling for any known issues or patches.
  User Exits and BAdIs: Explore user exits or Business Add-Ins (BAdIs) that may allow for custom handling of document numbers during processing.
  
  By following these steps, you should be able to address the IST_EBS123 error and ensure that your external document numbers are processed correctly within SAP.