What does "_bustT" in the field component Name of a custom field refer to?

[ryofujishiro]

I defined a Custom Field to add items to the BP master.
The created item (published) has not yet been added to the screen.
　Field Type：Code List(1)
　Identifier：YY1_C_COLL_MON_240
　Business Context：Master Data: Business Partner(BP_CUSTVEND1)

On another occasion, I used the API (A_BusinessPartner) to get data, and noticed that "_ bus" was added to the end of the component name of Custom Field.
In the app, the Custom Field has a Field Component Name of "_ bus" or "_ busT".

I assume these are retrieved via the API, but there is also a "_ busF" result from the API.
The items in the red frame in the image below.

If anyone knows what the "_ bus" at the end of these refers to (especially _busT and _busF) and what purpose it is given for?
Also, is there anything to be granted other than "_ xxT" and "_ xxF"?

[OwenLiu]

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[Jerry_Lowery · Accepted solution]

Hi 

In the Custom Fields app, which you choose to Create a new custom field, you need to choose the context.

In the context chooser, you can click the little gear and add the field suffix to the list.

Hint  in the Search you can also type "BUS" (or even "BUST" for that matter).

So searching that one, we see the context is Business Partner Master Data.

The suffix always denotes the business context of the custom field. 

This is necessary because you can have the same field name in different Business Objects - especially in a Business Scenario where the value is copied from one object to another (Sales Doc to Billing for example).

For the "T" and "F" specifically, I am guessing here, but I noticed you field is a Code List - so it would have a Field Value and Text Value - I am guessing what the BUST and BUSF represent.

One is the code value and the other is the associated code text.

BUS by itself might get the Text value?

I hope this helps

Thank you
Jerry