How To Fix IH091 - You must enter a partner number for the partner function

SAP Error Message - Details

• Message type: E = Error

• Message class: IH - structuring

• Message number: 091

• Message text: You must enter a partner number for the partner function

What causes this issue?

You have entered a <GL:partner_function>partner function</> for the
selection, but have not entered a corresponding partner number.

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?

Enter a <GL:partner>partner</> that has this function.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message IH091 - You must enter a partner number for the partner function ?

  The SAP error message IH091, which states "You must enter a partner number for the partner function," typically occurs in the context of creating or modifying a business transaction where partner functions are involved, such as in sales orders, contracts, or service orders. This error indicates that a required partner number for a specific partner function has not been provided.
  Cause:
  The error is usually caused by one of the following reasons:
  
  Missing Partner Information: The partner function (e.g., sold-to party, ship-to party, payer, etc.) requires a partner number, but it has not been entered.
  Incorrect Configuration: The partner function may be incorrectly configured in the system, leading to mandatory fields not being filled.
  Data Entry Error: The user may have overlooked entering the partner number or may have entered it incorrectly.
  
  Solution:
  To resolve the IH091 error, you can take the following steps:
  
  
  Check Partner Functions:
  
  Go to the transaction where the error occurred (e.g., VA01 for sales orders).
  Ensure that all required partner functions are filled in correctly. Look for fields like Sold-to Party, Ship-to Party, etc.
  
  
  
  Enter Partner Number:
  
  If a partner number is missing, enter the appropriate partner number for the required partner function. You can search for valid partner numbers using the search help (F4).
  
  
  
  Review Configuration:
  
  If you have access to configuration settings, check the partner function settings in the relevant customizing transaction (e.g., SPRO).
  Ensure that the partner functions are correctly defined and that the mandatory fields are set up as expected.
  
  
  
  Validate Data:
  
  Ensure that the partner number you are entering is valid and exists in the system. You can check this in the customer or vendor master data.
  
  
  
  Consult Documentation:
  
  If you are unsure about which partner functions are required for your specific transaction type, refer to the SAP documentation or consult with your SAP functional consultant.
  
  
  
  Related Information:
  
  Transaction Codes: Common transaction codes where this error might occur include VA01 (Create Sales Order), VA02 (Change Sales Order), and IW31 (Create Maintenance Order).
  Partner Functions: Familiarize yourself with the different partner functions relevant to your business processes, as they can vary based on the configuration.
  SAP Notes: Check for any relevant SAP Notes that might address specific issues related to partner functions and error IH091.
  
  If the issue persists after following these steps, it may be beneficial to involve your SAP support team or a functional consultant for further investigation.