FilesApi addFile error: 'Invalid input: file - This field was not expected.', #682

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1. youssef-saber-3 commented on Feb 5, 2026

   

   youssef-saber-3

   on Feb 5, 2026

   Contributor

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   Hey , here is an updated example of the file upload, you can find it in our pipedrive file upload tutorial https://developers.pipedrive.com/tutorials/adding-files-via-pipedrive-api?step=7

   // All tutorial Node.js code examples are for reference only and shouldn't be used in production code as is.
   // In production, a new Configuration() instance should be initialised separately for each request.
   const pipedrive = require('pipedrive');
   const fs = require('fs');
   const { File } = require('node:buffer');
   
   // Configure authorization by setting api key
   // PIPEDRIVE_API_KEY is an environment variable that holds real api key
   const defaultClient = new pipedrive.v1.Configuration({
           apiKey: process.env.PIPEDRIVE_API_KEY,
   });
   
   async function addFile() {
           try {
                   console.log('Sending request...');
   
                   const api = new pipedrive.v1.FilesApi(defaultClient);
   
                   // Read the file from disk into a Buffer
                   const filepath = './example.txt';
                   const fileBuffer = fs.readFileSync(filepath);
   
                   // Create a File object from the buffer
                   const fileToUpload = new File([fileBuffer], 'example.txt', {
                           type: 'text/plain',
                   });
   
                   // Upload the file - note the object structure
                   const response = await api.addFile({
                           file: fileToUpload,
                           deal_id: 1,
                           // You can also associate with other entities:
                           // person_id: 1,
                           // org_id: 1,
                           // activity_id: 1,
                           // product_id: 1
                   });
   
                   console.log('File was added successfully!', response);
           } catch (err) {
                   const errorToLog = err.context?.body || err;
   
                   console.log('Adding a file failed', errorToLog);
           }
   }
   
   addFile();
2. youssef-saber-3

   closed this as completedon Feb 5, 2026