Document Upload- WebAPI

Did you consider to use a!isnullorempty() instead of isnull()? This is the more modern approach and manages more of the edge cases.

Yes Stefan Helzle ,

I did try and the result was same. I don't see anywhere documented that Appian will create a document by itself and upload it if no document was passed in the body.

Also, I don't see where "Untitled document from web API.txt" part is being handled in the webAPI.

Can you post the full HTTP request you send to Appian?

Need to see the body . Null or empty also gives false for empty array .If your body coming as a empty array it will go for true statement in that if condition 

PFB, the requested details:

'Binary file load error: invalid or missing file source'
POST https://**********.appiancloud.com/suite/webapi/upload-test-document: {
"Network": {
"addresses": {
"local": {
"address": "1**.1*.*.2",
"family": "IPv4",
"port":5***6 
},
"remote": {
"address": "7*.***.*.*5",
"family": "IPv4",
"port": 443
}
},
"tls": {
"reused": false,
"authorized": true,
"authorizationError": null,
"cipher": {
"name": "*******-RSA-******-***-SHA256",
"standardName": "TLS_***********************",
"version": "TLSv1.2"
},
"protocol": "TLSv1.2",
"ephemeralKeyInfo": {
"type": "ECDH",
"name": "prime256v1",
"size": 256
},
"peerCertificate": {
"subject": {
"commonName": "*.appiancloud.com",
"alternativeNames": "DNS:*.appiancloud.com, DNS:*.api.appiancloud.com, DNS:api.appiancloud.com, DNS:*.appiancloud-dynamic.com, DNS:appiancloud.com, DNS:appiancloud-static.com, DNS:appiancloud-dynamic.com, DNS:*.appiancloud-static.com"
},
"issuer": {
"country": "US",
"organization": "Amazon",
"commonName": "Amazon RSA 2048 M03"
},
"validFrom": "Oct 9 00:00:00 2024 GMT",
"validTo": "Nov 7 23:59:59 2025 GMT",
"fingerprint": "****************************************************",
"serialNumber": "*******************************************************************"
}
}
},
"Request Headers": {
"authorization": "Basic ************************************/",
"user-agent": "PostmanRuntime/7.43.0",
"accept": "*/*",
"cache-control": "no-cache",
"postman-token": "f0843694-4b38-42e7-b136-6460c0a14053",
"host": "deloitteuk.appiancloud.com",
"accept-encoding": "gzip, deflate, br",
"connection": "keep-alive"
},
"Request Body": "{ value: null }",
"Response Headers": {
"date": "Tue, 21 Jan 2025 06:24:36 GMT",
"content-length": "61",
"connection": "keep-alive",
"x-trace-id": "d7cc7121e3fc79f2a26bbfa005e6fff7",
"strict-transport-security": "max-age=31536000; includeSubDomains; preload",
"referrer-policy": "strict-origin-when-cross-origin",
"x-frame-options": "SAMEORIGIN",
"content-security-policy-report-only": "style-src 'unsafe-inline' 'self' web-assets.appian-cdn.com 'strict-dynamic' 'nonce-OThjNjMzODEtN******************************'; child-src 'none'; script-src 'self' 'unsafe-inline' 'unsafe-eval' web-assets.appian-cdn.com 'strict-dynamic' 'nonce-ZDhlMTY1YzktMDBhNi00ZTMxLWFmZjUtYTNiMWMxZWUzNjg1'; object-src https:; frame-src https:; img-src https:; default-src 'self'; font-src 'self' https: data:; report-uri /suite/rest/a/logging/latest/csp/report; report-to report;",
"content-security-policy": "report-uri /suite/rest/a/logging/latest/csp/report; report-to report;",
"reporting-endpoints": "report=\"/suite/rest/a/logging/latest/csp/report\"",
"x-xss-protection": "1; mode=block",
"requested-while-authenticated": "false",
"x-robots-tag": "none"
},
"Response Body": "Upload Successful: 25222 - Untitled document from web API.txt"
}

Hi Stephan,

Ideally it should go to error handling and should give "404- Document Not Found" if no document is sent.

But if you see the response it is generating a document by itself and giving as : "Response Body": "Upload Successful: 25222 - Untitled document from web API.txt"

Then you need to adapt your validation. It is not the body that is null or not, but your body contains a JSON structure and a field called "value" that is null or not.

Then you need to adapt your validation. It is not the body that is null or not, but your body contains a JSON structure and a field called "value" that is null or not.