How To Fix FMCA_BRF018 - Enter an index or aggregate function

FMCA_BRF018 - Overview

• Message type: E = Error

• Message class: FMCA_BRF - FMCA -> BRF Interface

• Message number: 018

• Message text: Enter an index or aggregate function

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.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

FMCA_BRF018 - Details

• The SAP error message FMCA_BRF018, which states "Enter an index or aggregate function," typically occurs in the context of Business Rule Framework (BRF+) when a user is trying to define a rule or expression that requires an index or an aggregate function but has not provided one.
  
  Cause:
  
  Missing Function: The error usually arises when a user attempts to use a data structure (like a table or an array) without specifying how to access its elements. For example, if you are trying to retrieve a specific value from a table, you need to specify an index or an aggregate function to do so.
  Incorrect Syntax: The syntax used in the expression might be incorrect or incomplete, leading to the system not being able to interpret the request properly.
  Data Type Mismatch: The data type being used may not support the operation you are trying to perform, which can lead to this error.
  
  
  Solution:
  
  Specify an Index: