How To Fix MC543 - Mandatory key fields were applied automatically

SAP Error Message - Details

• Message type: E = Error

• Message class: MC - Aggregate: views, matchcodes, lock objects

• Message number: 543

• Message text: Mandatory key fields were applied automatically

What causes this issue?

An aggregate contains several tables. All the primary key fields which
are not also foreign key fields of the tables included in the aggregate
must be fields of the aggregate. The latter are redundant because they
contain the same values as the corresponding primary key fields.

System Response

The system automatically adopted these mandatory fields.

How to fix this error?

No action necessary.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MC543 - Mandatory key fields were applied automatically ?

  The SAP error message MC543, which states "Mandatory key fields were applied automatically," typically occurs in the context of Material Management (MM) or Production Planning (PP) modules when certain mandatory fields are not filled in during a transaction or process. This message indicates that the system has automatically filled in some key fields to allow the process to continue, but it may not be the desired behavior.
  
  Cause:
  
  Missing Mandatory Fields: The error usually arises when a user attempts to execute a transaction without filling in all the required fields. SAP has certain mandatory fields that must be populated for the transaction to proceed.
  
  Configuration Issues: Sometimes, the configuration settings in the system may require certain fields to be filled, and if they are not, the system will automatically fill them based on predefined rules.
  User Input Errors: Users may overlook entering necessary data or may not be aware of the mandatory fields required