People may recommend you to hold IWDA but you can only find SWDA on your broker. To add to the confusion you go to the iShares profile of the funds and realize that there aren’t any differences between IWDA and SWDA. What’s the catch?
IWDA, SWDA, EUNL are all tickets for the iShares Core MSCI World ETF.
A ticker symbol is an identifier of a stock used within a stock exchange. A ticker symbol is exchange dependent therefore, a fund listed in different stock exchanges may have different ticker symbols. The iShares Core MSCI World ETF has the ticker symbol IWDA in Euronext Amsterdam, SWDA in SIX Swiss Exchange and EUNL in XETRA.
Additionally, even within the same stock exchange the same fund may have different tickers if it is traded under different countries. The iShares Core MSCI World ETF has the ticker symbol IWDA in the London Stock Exchange when traded in USD and SWDA when traded in GBP.
The listings page in justETF provides details of where the fund is listed along with the trade currency and the ticker symbol.
Since ticker symbols are exchange dependent, in order to uniquely identify a fund you can use its International Securities Identifying Number (ISIN). The ISIN for the iShares Core MSCI World ETF is IE00B4L5Y983.