The specified procedure could not be found error is thrown from 2.4.3 version onwards

[AnkitSomani22]

Error: The specified procedure could not be found.
\\?\C:\test\node_modules\node-rfc\lib\binding\sapnwrfc.node

 The SAP NW RFC SDK could not be loaded, check the installation: https://github.com/SAP/node-rfc/blob/master/doc/installation.md#sap-nwrfc-sdk-installation
environment: {
  "platform": {
    "name": "win32",
    "arch": "ia32",
    "release": "10.0.19042"
  },
  "env": {
    "SAPNWRFC_HOME": "C:\\nwrfcsdk",
    "RFC_INI": "",
    "nwrfcsdk_lib_on_path": true
  },
  "versions": {
    "node": "14.16.1",
    "v8": "8.4.371.19-node.18",
    "uv": "1.40.0",
    "zlib": "1.2.11",
    "brotli": "1.0.9",
    "ares": "1.16.1",
    "modules": "83",
    "nghttp2": "1.41.0",
    "napi": "7",
    "llhttp": "2.1.3",
    "openssl": "1.1.1k",
    "cldr": "37.0",
    "icu": "67.1",
    "tz": "2020a",
    "unicode": "13.0"
  }
}

    at Object.Module._extensions..node (internal/modules/cjs/loader.js:1122:18)
    at Module.load (internal/modules/cjs/loader.js:928:32)
    at Function.Module._load (internal/modules/cjs/loader.js:769:14)
    at Module.require (internal/modules/cjs/loader.js:952:19)
    at require (internal/modules/cjs/helpers.js:88:18)
    at Module._compile (internal/modules/cjs/loader.js:1063:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
    at Module.load (internal/modules/cjs/loader.js:928:32)
    at Function.Module._load (internal/modules/cjs/loader.js:769:14)
    at Module.require (internal/modules/cjs/loader.js:952:19)
    at require (internal/modules/cjs/helpers.js:88:18)
    at Module._compile (internal/modules/cjs/loader.js:1063:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
    at Module.load (internal/modules/cjs/loader.js:928:32)

Above exception is thrown while calling require('node-rfc').This exception is thrown in latest version 2.5.1.Things are working fine in version 2.4.2 and below.

This issue is machine specific as well. We could reproduce this issue in 3 systems.
Below is the environment info of the system.

System:
OS: Windows 10 10.0.19042
CPU: (8) ia32 Intel(R) Core(TM) i5-8350U CPU @ 1.70GHz
Memory: 19.61 GB / 31.84 GB
Binaries:
Node: 14.16.1 - C:\Program Files\nodejs\node.EXE
npm: 6.14.12 - C:\Program Files\nodejs\npm.CMD

[bsrdjan]

Which SAP NWRFC SDK version is used?

[AnkitSomani22]

latest version of NWRFCSDK which is 7.50.8.

[bsrdjan]

Thanks Ankit. And the node-rfc is locally installed, by npm install node-rfc, correct?

[AnkitSomani22]

Yes Srdjan

[bsrdjan]

The issue looks similar to #226 but could not reproduce it either.

Could you please activate Windows Process Monitor trace on affected system, to track down which library exactly fails to load (example: #127 (comment)) ?

[bsrdjan]

Could you please check if this solution of the similar (same?) issue helps on your system #226 (comment) ?

[bsrdjan]

The log shows:

• sapnwrfc.dll loaded from C:\Windows\SysWOW64
• libsapucum.dll loaded from C:\Program Files (x86)\<<redacted>>\Desktop Agent\nwrfcsdk\lib

There should be one copy of SAP NWRFC SDK Libs on PATH and removing the "copies" should fix the issues, similar to #226 (comment)

Perhaps some recently installed package installed these additional copies of RFC SDK? Can you eventually found out which one?

[bsrdjan]

Please reopen if support still needed.