How To Fix MA628 - Only assign quantity and currency fields to one another

SAP Error Message - Details

• Message type: E = Error

• Message class: MA - Sales and Operations Planning

• Message number: 628

• Message text: Only assign quantity and currency fields to one another

How to fix this error?

You can only use the key figure assignment to assign currency key
figures of the info structure, and currency key figures of the
operating concern, or quantity key figures of the info structure and
quantity key figures of the operating concern to each other.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MA628 - Only assign quantity and currency fields to one another ?

  The SAP error message MA628 ("Only assign quantity and currency fields to one another") typically occurs in the context of Material Management (MM) or related modules when there is an attempt to assign or manipulate fields that are not compatible with each other. This error usually arises during transactions involving material movements, inventory management, or when dealing with purchase orders and invoices.
  Cause:
  The error is caused by trying to assign a quantity field (which is usually a numeric value representing the amount of material) to a currency field (which represents monetary values) or vice versa. This can happen in various scenarios, such as:
  
  Incorrect Field Mapping: When fields in a transaction or a custom program are incorrectly mapped, leading to an attempt to assign incompatible data types.
  Data Entry Errors: Manual data entry errors where a user might input a quantity in a currency field or vice versa.
  Custom Development Issues: If there are custom programs or enhancements that manipulate data, they might not handle the data types correctly.
  
  Solution:
  To resolve the MA628 error, you can take the following steps:
  
  
  Check Field Assignments: Review the transaction or program where the error occurred. Ensure that quantity fields are only assigned to other quantity fields and currency fields are assigned to other currency fields.
  
  
  Data Validation: Implement validation checks in custom programs to ensure that the correct data types are being assigned. This can prevent the error from occurring in the first place.
  
  
  Review User Input: If the error is due to manual data entry, provide training to users on the correct input formats and field usage.
  
  
  Debugging: If the error occurs in a custom program, use debugging tools to trace the execution and identify where the incorrect assignment is happening.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific details on the fields involved in the transaction to ensure proper usage.
  
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that might address this specific error or provide patches or updates that could resolve the issue.
  
  
  Related Information:
  
  Transaction Codes: The error can occur in various transaction codes related to inventory management, purchasing, or sales, such as MIGO (Goods Movement), MIRO (Invoice Verification), etc.
  Field Types: Understand the data types of the fields involved. Quantity fields are typically defined as numeric types, while currency fields are defined as currency types with specific formats.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered and resolved similar issues.
  
  By following these steps, you should be able to identify the root cause of the MA628 error and implement a solution to prevent it from occurring in the future.