Could not upload “zero size”. Reason: This file is empty

Question

I am getting the below error message when I tried to upload zero size document.Though I am validating size of the file, getting the below error message: An Error Has Occurred Could not upload &ldquo;zero size&rdquo;. Reason: This file is empty How can I remove this error message? sample code : load( local!FileSize:0, local!fileName, a!formLayout( label: "Upload Document Sample", firstColumnContents: { a!fileUploadField( label: "File Upload", labelPosition: "ABOVE", instructions: "", target:"Temporary Documents", value: fileName, saveInto: { fileName, a!save(local!FileSize,a!fileUploadField(value:fileName).uploadedDocumentSize) }, validations: { if(FileSize<=0,"Error, file size",null ) } ), }, secondColumnContents: { /* Add components here for a two-column form */ }, buttons: a!buttonLayout( primaryB... 
 OriginalPostID-224673 
 OriginalPostID-224673

aloks0189 · Answer

Hi ramakg why do you want to upload an empty file into Appian KC? I believe, it doesn't add any difference whether you upload an empty document or don't upload any document. Hence Appian doesn't allow uploading an empty document 
 
Your file must contain at least one binary stream content / character, in order to upload it to Appian KC. 
 
Also, as we know, Appian need to generate a document id and need to insert few rows into its primary DB whenever a new document gets uploaded into KC. Hence when your document is empty means there are no reason to perform these set of operations. 
 
However, if your business requirement still require you to upload an empty document then you need to discuss with Appian support, hope they will be able to help you on this.

saurabhp0002 · Answer

Hi Shweta, 
 You might be just navigating interface to upload empty file.. it shows that it is less than <0 kb and show attach file where as the minute you try to submit it will pop up with error message and doesn't allow to upload it. You might get error something like below As already shared by most of us. 
 
 Appian has kept the constrains to upload empty or zero size file. For me it make sense to have it in place. I would be more interested to understand the business case why do you need to upload the zero kb file. if the requirement is to generate the document, you could simply achieve by having template and generate the file on runtime.

yeswanththiyarir · Answer

I think this is the default appian behaviour and none of your mistake. For now you could possibly leave the document field empty, if there is no file to upload or create a default document in document folder and point your document field to that document. 
Thanks, 
Yeswanth.