Do you use the integration between DealPOS and Jurnal.id? If you do so, then you need to change the value from Client Secret to Client Guid in jurnal.dealpos.app. To change the value is quite easy, you can follow the steps below:
I. Get Developer API from POS
Step 1. Go to My Profile
Click on your store name, click My Profile, then click the Developer API tab.

Step 2. Copy to Clipboard the API Client Secret

Now you have the API Client Secret, we can go through the next steps
II. Update Client Guid into jurnal.dealpos.app
Step 1. Go to jurnal.dealpos.app & login as usual

Step 2. Click Config & Edit

Step 3. Paste your Client Secret to Client Guid

Don't forget to click Save after updating Client Guid.
You might also like to read this article:
If you experience failure in uploading transactions to jurnal.id, you can check the following articles: Common Upload Error Fail Solution.
Do you use a surcharge in transactions at POS? You can check the following article to sync Surcharge to jurnal.id: How to sync invoice with Surcharge to Jurnal.id.
Adjustment transactions need to be uploaded manually, how you can check the following article: Synchronize Adjustment to Jurnal.id.