Parentheses within abbreviations

The example that I have is from South Africa. Chartered accountants here abbreviate their titles in emails to:

CA(SA)

This is meant to abbreviate "Chartered Accountant (South Africa)". I feel, however, that this may be a mistake that is propagated by a precedent set by other accountants.

Is it not more correct to use a space?

CA (SA)

Orthographically, this seems more consistent to me.

EDIT:

There is no question about spaces in the original phrase: "Chartered Accountant (South Africa)". Instead, the question is about whether parentheses need spaces when the whole phrase is abbreviated.

EDIT 2:

The general question is: How does a bracket, preceded by a space, compile to an abbreviation? When the phrase in question refers to a named entity it seems like common courtesy is to use whichever style the entity itself prefers.

Since the parenthetical part is inalienable from the non-parenthetical part when written out in full, the abbreviation without space is correct, in the sense of what conveys the most accurate impression to a native English reader.

The alternative that separates the parenthetical with a space, CA (SA), makes it appear to have two parts, the second being optional. Since the parenthetical is a non-optional part of the professional designation, the presence of a space gives the wrong impression.

Parentheses in an abbreviation do look odd to some English speakers, and a reasonable alternative would be CASA; however, that much of a rewrite of the profession’s own chosen abbreviation of their designation feels like a clear overreach by native English outsiders.

Hence, CA(SA) conveys the most accurate understanding of what it abbreviates: an abbreviated proper name with a parenthetical that is an integral part of the designation.

(It’s worth noting that I am including South Africa when I mention native English speakers above.)