How To Fix PQ106 - The scales for "&" and "&" are not compatible with each other

PQ106 - Overview

• Message type: E = Error

• Message class: PQ - HR-PD: Personnel Development

• Message number: 106

• Message text: The scales for "&" and "&" are not compatible with each other

What causes this issue?

To perform this action, the scales of entries must be compatible for
the entire validity period.
When you move qualifications, the validity dates of the qualification
you want to move must be compatible with those of the qualifications
catalog.

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

Error message extract from SAP system. Copyright SAP SE.

PQ106 - Details

• The SAP error message PQ106, which states "The scales for '&' and '&' are not compatible with each other," typically occurs in the context of production planning or quality management when there is an issue with the units of measure (UoM) or scales used in the system. This error indicates that the system is trying to compare or process data that uses different measurement scales, which are not compatible.
  Causes:
  
  Different Units of Measure: The most common cause is that the materials or components involved are defined with different units of measure that cannot be directly compared or converted.
  
  Configuration Issues: There may be configuration issues in the material master data, where the base unit of measure and alternative units of measure are not set up correctly.
  Inconsistent Data: The data entered in the system may be inconsistent, such as using different scales for the same material in different transactions.
  Batch Management: If batch management