How To Fix MC677 - Required field &-& missing

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 677

• Message text: Required field &-& missing

What causes this issue?

Maintenance views and matchcode objects should contain certain key
fields of the base tables in order to ensure that the key is unique.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

For matchcode objects, these are all the key fields of the base tables,
with the exception of the key fields, which are linked using foreign
key with the key fields of the referenced tables.
For maintenance views, only the key fields of the primary table
generally have to be included. Key fields of referenced tables do not
have to be included since the records of the referenced tables cannot
be maintained.
The key fields of dependent tables only have to be included if they are
not linked by foreign key with the referenced table. Since only n:1
relationships are permitted, this link generally exists.

System Response

How to fix this error?

If a mandatory field is missing, the functionality of the object might
be restricted.
Create the field using the function <LS>Select fields</> in the field
maitenance screen of the object.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MC677 - Required field &-& missing ?

  The SAP error message MC677 ("Required field &-& missing") typically occurs in the context of Material Management (MM) or Production Planning (PP) modules when a required field in a transaction or data entry is not filled out. This can happen in various scenarios, such as during the creation or modification of master data, transactions, or reports.
  Cause:
  The error indicates that a mandatory field, which is necessary for the process you are trying to execute, has not been filled in. This could be due to:
  
  Missing Data: A required field in the transaction or master data is left blank.
  Configuration Issues: The system configuration may require certain fields to be filled that are not typically mandatory.
  User Input Error: The user may have overlooked a required field while entering data.
  
  Solution:
  To resolve the MC677 error, you can take the following steps:
  
  
  Identify the Missing Field: Check the error message details to identify which specific field is missing. The error message usually indicates the field name or code.
  
  
  Fill in the Required Field: Navigate to the relevant transaction or data entry screen and ensure that all required fields are filled in correctly.
  
  
  Review Configuration: If you believe the field should not be mandatory, consult with your SAP administrator or functional consultant to review the configuration settings. They can check if the field is set as mandatory in the system configuration.
  
  
  Check User Authorizations: Ensure that the user has the necessary authorizations to enter data in the required fields.
  
  
  Consult Documentation: Refer to SAP documentation or help files for the specific transaction or module you are working with to understand the required fields better.
  
  
  Testing: After making the necessary changes, try to execute the transaction again to see if the error persists.
  
  
  Related Information:
  
  Transaction Codes: The error can occur in various transaction codes, such as MM01 (Create Material), MM02 (Change Material), or during inventory management transactions.
  SAP Notes: Check SAP Notes for any known issues or patches related to the error message MC677.
  User Training: Ensure that users are trained on the importance of filling in all required fields to avoid such errors in the future.
  
  If the issue persists after following these steps, it may be beneficial to reach out to your SAP support team for further assistance.