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.

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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