How To Fix JIT00815 - JIT customer is necessary when entering an external call number

JIT00815 - Overview

• Message type: E = Error

• Message class: JIT00 - JIT: Messages for JIT Process

• Message number: 815

• Message text: JIT customer is necessary when entering an external call number

Self-Explanatory Message

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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 JIT00815 - JIT customer is necessary when entering an external call number ?

  The SAP error message JIT00815 indicates that a "JIT customer is necessary when entering an external call number." This error typically occurs in the context of Just-In-Time (JIT) delivery processes, where specific customer information is required for processing external call numbers.
  
  Cause:
  The error arises when you attempt to enter an external call number in a JIT scenario without having the necessary JIT customer data configured in the system. The JIT process requires specific customer details to ensure that the delivery and production processes are aligned with the customer's requirements.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check JIT Customer Configuration:
  
  Ensure that the JIT customer is properly configured in the system. You can do this by navigating to the relevant configuration settings in SAP.
  Go to the transaction code SPRO and follow the path: 
  Logistics Execution -> Shipping -> JIT Delivery -> Define JIT Customers.
  
  
  Verify that the customer in question is listed and