How To Fix APPL_COMMON016 - Main Indicator should be set exactly once

SAP Error Message - Details

• Message type: E = Error

• Message class: APPL_COMMON -

• Message number: 016

• Message text: Main Indicator should be set exactly once

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.

Smart SAP Assistant

• What is the cause and solution for SAP error message APPL_COMMON016 - Main Indicator should be set exactly once ?

  The SAP error message APPL_COMMON016 with the description "Main Indicator should be set exactly once" typically occurs in the context of data entry or configuration in SAP applications, particularly when dealing with data that requires a main indicator to be defined. This error indicates that the system expects the main indicator to be set only once for a particular context, but it has either been set multiple times or not at all.
  Cause:
  
  Multiple Entries: The main indicator has been set more than once in the same context (e.g., in a configuration or data entry screen).
  Missing Entry: The main indicator has not been set at all when it is required.
  Incorrect Configuration: There may be an issue with the configuration of the application or module that is leading to this error.
  Data Integrity Issues: There could be inconsistencies in the data being processed, leading to the system not being able to determine which entry should be the main indicator.
  
  Solution:
  
  Check Entries: Review the entries in the relevant screen or configuration to ensure that the main indicator is set only once. If it is set multiple times, remove the duplicates.
  Set the Main Indicator: If the main indicator is missing, ensure that it is set correctly according to the business requirements.
  Review Configuration: If you suspect a configuration issue, review the settings in the relevant transaction or configuration area to ensure that they are correct.
  Consult Documentation: Refer to SAP documentation or help resources for the specific module you are working with to understand the requirements for setting the main indicator.
  Data Validation: Validate the data being entered to ensure that it meets the criteria expected by the system.
  
  Related Information:
  
  Transaction Codes: Depending on the context, you may be working in various transaction codes (e.g., for material master, vendor master, etc.). Knowing the specific transaction can help in troubleshooting.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Authorization: Ensure that you have the necessary authorizations to make changes in the relevant areas of SAP.
  Testing: After making changes, test the process again to ensure that the error does not reoccur.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or reach out to SAP support for further assistance.