PROC HTTP error calling REDCap API

[jkurka]

I've researched for awhile, coming across several posts and SAS User Group presentations/papers on how to use SAS to call the REDCap API. However, all my attempts result in the same outcome.

filename my_in "C:\...api_parameters.txt";
filename my_out "C:\...api_redcap_data.csv";
filename status "C:\redcap_status.txt";

%let mytoken = tokenforredcapprojectwithnoquotes;

data _null_ ;
file my_in ;
put "%NRStr(token=)&mytoken%NRStr(&content=record&type=flat&format=csv)&";
run;

proc http
in=my_in
out= my_out
headerout = status
url ="https://redcap.institution.edu/api/"
method="post";
run;

The API parameters file is populated with this: token=tokenfromletstatement&content=record&type=flat&format=csv&

The status and data files are not populated.

Here is the error message:

ERROR:  An exception has been encountered.
Please contact technical support and provide them with the following traceback information:
 
The SAS task name is [HTTP (2)]
ERROR:  Read Access Violation HTTP (2)
Exception occurred at (02467E08)
Task Traceback
Address   Frame     (DBGHELP API Version 4.0 rev 5)
0000000002467E08  000000000BB2E730  tkmk:tkBoot+0x460C8
0000000002467F41  000000000BB2E7B0  tkmk:tkBoot+0x46201
00000000024697A6  000000000BB2E800  tkmk:tkBoot+0x47A66
000000000245442B  000000000BB2E870  tkmk:tkBoot+0x326EB
000000000331FA3E  000000000BB2E878  sashost:Main+0xA7F1E
000000000904E6F8  000000000BB2E8F8  tkhttp:tkextver+0x318
0000000008FCD741  000000000BB2F290  tkhttp:tkhttp+0xC741
0000000008FC6CEC  000000000BB2F390  tkhttp:tkhttp+0x5CEC
3                                                          The SAS System                             13:38 Friday, October 25, 2019

0000000008D95020  000000000BB2F398  sashttp:tkvercn1+0x3FE0
0000000008D91B20  000000000BB2F9E0  sashttp:tkvercn1+0xAE0
000000000483C477  000000000BB2F9E8  sasxshel:tkvercn1+0x4B437
0000000008D98622  000000000BB2FB00  sashttp:tkvercn1+0x75E2
0000000008D9115A  000000000BB2FBF0  sashttp:tkvercn1+0x11A
0000000003288A2B  000000000BB2FF20  sashost:Main+0x10F0B
000000000328E66D  000000000BB2FF50  sashost:Main+0x16B4D
00007FFED8BC3DC4  000000000BB2FF58  KERNEL32:BaseThreadInitThunk+0x14
00007FFED9273691  000000000BB2FF88  ntdll:RtlUserThreadStart+0x21

This is driving me crazy on why it's not working. Any help would be appreciated!

[rudfaden]

redCap has changed the api call.

You need this.

&content=record&format=csv&type=flat&rawOrLabel=raw&rawOrLabelHeaders=raw&exportCheckboxLabel=false&exportSurveyFields=false&exportDataAccessGroups=false&returnFormat=csv

I sugges you use the api playground in RedCap to generate your api call or read the documentation.