Message type: E = Error
Message class:  S_CUS_IMG_ACTIVITY - IMG Activity 
Message number: 066
Message text: Key fields of view/table &1 are not left-justified
The key fields of table/view &V1& are not left-justified, i.e. at least
the first field in the table is not a key field.
You cannot put tables/views whose key fields are not left-justified, in
BC Sets.
This is a design error in table/view &V1&. Contact your system
administrator or the SAP developer responsible for the table/view.
<ZH>Note for the developer responsible:</>
Adjust the view in the Dictionary so that the table definition starts
with all the key fields. If this object is a view, the key fields of the
view should match the key fields of the primary table.
If the table/view has a generated maintenance dialog, regenerate it when
you have changed the table/view in the Data Dictionary, with (SE54).
Test the BC Set functionality to ensure that the entries are correct.
Create a BC Set for the object.
Check whether the data has been completely recorded in the BC Set (SCPR3
or program SAPSCPR200).
Change an entry in the object (SPRO or SM30/34).
Activate the BC Set (SCPR20).
Check whether the values in the BC Set have been written correctly into
the table/view.
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.
The SAP error message S_CUS_IMG_ACTIVITY066 indicates that there is an issue with the key fields of a view or table not being left-justified. This typically occurs in the context of customizing or configuring views in the SAP system, particularly when working with the Implementation Guide (IMG).
Cause: The error arises when the key fields of a view or table are not formatted correctly. In SAP, key fields should be left-justified, meaning that they should start from the leftmost position in the field. If any key field is not left-justified, the system will throw this error to prevent inconsistencies in data handling and processing.
Solution: To resolve this error, you need to ensure that all key fields in the specified view or table are left-justified. Here are the steps to do this: Identify the View/Table: The error message will specify the view or table name (denoted as &1). Make a note of this. Access the View/Table Definition: Use
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
S_CUS_IMG_ACTIVITY065 Table/view &1 contains a GUID (field &2) in the key
What causes this issue?  The table/view &V1& has a GUID in the key. GUIDs are unique (generated) values, which should have no meaning in the c...
S_CUS_IMG_ACTIVITY064 Key fields of view/table &1 interrupted by data fields
What causes this issue?  The definition of the table/view &V1& contains gaps in key, i.e. there are non-key fields among the table/view key fi...
S_CUS_IMG_ACTIVITY067 IMG assignment incomplete: Maintain the object assignment in the IMG
What causes this issue?  IMG assignment incomplete: Maintain the object assignment in the IMG.How to fix this error?  Maintain the correct object for ...
S_CUS_IMG_ACTIVITY068 Compare flag not specified for object &1
 <ZH>&CAUSE&</> The comparison flag is not maintained for object &V1&. The comparison flag is relevant in customizing obje...
Click on this link to search all SAP messages.