Message type: E = Error
Message class:  QPMS - Planning for Multiple Specifications and Parameter Chars 
Message number: 205
Message text: Reference to inspection characteristic is not allowed
When editing the inspection plan, you tried to mark an inspection
characteristic as a parameter characteristic by creating a reference to
an existing master inspection characteristic.
This is not possible because the reference characteristic does not
contain any parameter characteristics.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
If you assign an inspection method with parameter characteristics to a
master inspection characteristic in an inspection plan, this master
inspection characteristic is marked as a <ZH>primary characteristic</>.
Even if the parameter characteristics are deleted in the inspection
plan, the master inspection characteristic is still marked as a primary
characteristic. If you want to assign another inspection characteristic
to such a primary characteristic when editing the inspection plan, you
must create a reference to the inspection characteristic number of the
primary characteristic.
In contrast, it is <ZH>not</> possible to assign an inspection
characteristic as a parameter characteristic to any master inspection
characteristic in the inspection plan. The reference characteristic must
<ZH>always</> be a primary characteristic. If this is not the case, you
must assign the parameter characteristic to an inspection method that
you will then assign to the master inspection characteristic.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message QPMS205 ("Reference to inspection characteristic is not allowed") typically occurs in the context of Quality Management (QM) when there is an issue with the configuration or usage of inspection characteristics in a quality inspection plan. Here’s a breakdown of the cause, potential solutions, and related information:
Cause:
Incorrect Characteristic Type: The inspection characteristic you are trying to reference may not be compatible with the type of inspection plan or the material being inspected.
Missing Configuration: The inspection characteristic may not be properly configured in the system, or it may not be assigned to the correct inspection plan.
Reference Issues: The characteristic might be referencing another characteristic that is not allowed or does not exist.
Usage in Different Contexts: The characteristic may be used in a context that does not support it, such as trying to use a characteristic meant for a different type of inspection.
Solutions:
Check Characteristic Configuration:
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QPMS204 Method cannot be changed on the detail screen
What causes this issue?  You want to change an inspection method on the detail screen for the inspection plan characteristic. If the old or new inspec...
QPMS203 The parameter characteristic cannot be displayed
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QPMS206 The inspection characteristic to which you want to link does not exist
 <ZH>&CAUSE&</> You want to specify a reference to a primary characteristic for a parameter characteristic. However, the character...
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