Duplicate columns created in attribute view

Hi
I created an attribute view as shown in the video Creating an attribute view | SAP HANA using the data given. After creating the attribute view as per the video, when I preview the data in the attribute view, I see that all the columns are created twice. For instance there is Company Name and Company Name 1, Contact_Name and Contact_Name1, ContactTitle and ContactTitle1 and so on. This has happened for all the fields.
I checked the table in the schema to see if there are duplicate fields there. But the DIMSupplier table in the STS schema has no duplicate fields.
What I want to know is how were these duplicate fields created in this attribute view and how do I remove them? I checked the output fields and there also there are no duplicate fields.
When I right click on the attribute view and select data preview, and then under the tab "Distinct Values" I can see all these duplicate field names. I am trying to delete these duplicate field names but I am getting an error message that the field you are trying to delete is being used elsewhere hence it cannot be delete.
Can anyone please advise how to fix this error.
Thank you.
Regards,
Pavan.

Hi Anjali,
Thanks a lot for your reply. But in my data foundation STS_ATTRIBUTE_VIEW, I do not see any duplicate columns to remove them. Today I see a warning and also I am unable to right click on the attribute view.
The warning is given below:
Message :
STS.STS_ATTRIBUTE_VIEW: one or more columns of Table: DIMSUPPLIER have invalid ABAP name
But in the Data Foundation in the Output tab under Columns I do not have any duplicate columns listed.
Also the attribute view is in grey color. Its not in green color even after clicking on Save and Validate and SAve and Activate.
I select the attribute view and hit on the data preview button. There in the Analysis tab under Available objects under String folder I can see all these duplicate column names. I right click on the duplicate column names and I see the options "Distinct Values", "Add to labels", values, filters and "Properties". Having selected the column name I hit on the delete button on my keyboard but nothing happened.
Is this because of the warning that I am getting. What does this warning mean?
Please advise.
Thank you.
Regards,
Pavan.

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