SAP NetWeaver RFC SDK 7.50 [RFC_INVALID_PARAMETER] [EXTERNAL_RUNTIME_FAILURE]

[former_member1379102]

Hello all,
I am new in using the SAP in general, and SAP NetWeaver RFC SDK in particular.

Currently, I am in the process of updating the our systems SAP NetWeaver RFC SDK to version 7.50.
But unfortunately when calling:

const unsigned paramsCount = 8;

RFC_CONNECTION_PARAMETER params[paramsCount];
params[0].name = "SYSNR";
params[0].value = "02";

params[1].name = "ASHOST";
params[1].value = "<IP_ADDRESS>";

params[2].name = "CLIENT";
params[2].value = "<CLIENT_NO.>";

params[3].name = "USER";
params[3].value = "<USER>";

params[4].name = "PASSWD";
params[4].value = "<PASSWORD>";

params[5].name = "LANG";
params[5].value = "D";

params[6].name = "DEST";
params[6].value = "";

params[7].name = "TRACE";
params[7].value = "";

RfcOpenConnection(params, sizeofR(params)/sizeofR(RFC_CONNECTION_PARAMETER), &error_info);

I am getting the following error:

NameValueType
codeRFC_INVALID_PARAMETER (20)_RFC_RC
NameValueType
groupEXTERNAL_RUNTIME_FAILURE (5)_RFC_ERROR_GROUP

I have checked the parameters and there are all correct.

I would appreciate any input on what might have been the cause of this error.

System:
MSVC 2019 (v142) x86
Windows SDK 10


Regards,
Za