How To Fix ECDEMO018 - Enter a Customer Number

SAP Error Message - Details

• Message type: E = Error

• Message class: ECDEMO - Messages for eCATT Demo Applications

• Message number: 018

• Message text: Enter a Customer Number

What causes this issue?

A customer number is missing in the booking data.

System Response

The system cannot execute the booking without customer number.

How to fix this error?

Enter a customer number. You can use the input help or the <ZK>Create
Customer</> function to create a new customer master. In the latter
case the customer number is generated automatically.

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 ECDEMO018 - Enter a Customer Number ?

  The SAP error message ECDEMO018, which states "Enter a Customer Number," typically occurs in scenarios where a transaction or process requires a customer number to proceed, but none has been provided. This error is often encountered in modules related to sales and distribution (SD), customer relationship management (CRM), or any other area where customer data is essential.
  
  Cause:
  
  Missing Input: The most common cause is that the user has not entered a customer number in the required field.
  Incorrect Configuration: There may be configuration settings in the system that require a customer number for certain transactions.
  User Error: The user may have overlooked the field or misunderstood the requirements of the transaction.
  Data Entry Issues: If the customer number is being pulled from another source (like a previous transaction), there may be issues with data integrity or flow.
  
  
  Solution:
  
  Enter a Customer Number: The immediate solution is to ensure that a valid customer number is entered in