title: Using the Rblapi package to pull data
body: <p>I have a list of ISINs which is my only source of information. In Excel I can catch the Bloomber ticker which is needed in many cases because it specifies the code of the exchange on which the asset is traded. To do so I only have to add "... Equity isin" in a BDP()-Formula  where "..." is a placeholder for the ISIN.
  So with the new Rblpapi package (which is by the way a fantastic tool!) I can try to do the same:</p>
  
  <p>Here is a list of random ISINs</p>
  
  <pre><code>isins = c("LU0942970442", "LU0997545750"  ,"CH0019597530" , "CH0017142719"  , "CH0131872431", "VGG0475N1087", "US46429B6974", 
  "LU0911032141"  , "DE000A1JCWS9")
  </code></pre>
  
  <p>adding "equity" and calling "TICKER_AND_EXCH_CODE" within the bdp formula </p>
  
  <pre><code>require(Rblpapi)
  blpConnect()    
  
  portfolio_ticker = bdp(paste(c(isins),"equity"), "TICKER_AND_EXCH_CODE")
  </code></pre>
  
  <p>however leaves some Tickers unspecified. </p>
  
  <pre><code>&gt; portfolio_ticker
                      TICKER_AND_EXCH_CODE
  LU0942970442 equity              XBAC SW
  LU0997545750 equity           AXESZHD LX
  CH0019597530 equity                     
  CH0017142719 equity                     
  CH0131872431 equity                     
  VGG0475N1087 equity           ARIASII VI
  US46429B6974 equity                     
  LU0911032141 equity           FCEUSMI LX
  DE000A1JCWS9 equity           CHOMCAR GR
  </code></pre>
  
  <p>My question is: Is this a thinking-error on my side or is this a bug in the package?</p>
  
  <p><strong>EDIT:</strong> As an example how it looks on my side in Excel, here is the corresponding picture.</p>
  
  <p><a href="https://i.stack.imgur.com/yrwJI.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/yrwJI.jpg" alt="enter image description here"></a> </p>