Why am I getting the error "GSP credentials cannot be blank" when trying to generate e-invoices? What credentials need to be specified?

If you are getting error GSP credentials cannot be blank when trying to generate e-invoices,you need to check these things:
 Step 1:Go to Administration menu,click Configuration,Click Features and Options,click GST/VAT tab,here you can click GSP configuration in e invoice option,Please check here, GSP credentials should be mentioned. If they are appearing blank, you must have created GSP credentials on the e-invoice portal and then paste them here.
 Step 2:To generate GSP credential,Open google chrome on your system,
 Step 3:Open E-invoice site and login.
 Step 4:After login you will see an option registration.Click on it,and then click on for GSP,then click Add new option,select GSP as webtel or pinacale mention suffix with minimun length of 3 character,then create a password with one special character,gsp will be created.
 Step 5:Then Open the BUSY accounitng software on your system.
 Step 6:Open the selected company.
 Step 7:Go to Administration menu,
 Step 8:Select Configuration,
 Step 9:Select Features and option
 Step 10:click GST/VAT Tab,
 Step 11:Enable E-invoice Required,
 Step 12:Click configuration and mention location and pincode and save.
 Step 13:Then click GSP configuration and Please paste the GSP ID and password here, you have just created on the portal.after that save this window.
 Step 14:Go Administration then configuration then voucher series configuration, click on sales ans select series,click voucehr configuration HERE is a option is Generate e invoice After saving, specify Y then transport window should also Y,Now you are able to generate e invoice from your BUSY accounitng software automatically.
 Step 15:You can go and add any sale invoice,after saving voucher the window will appear Do you want to generate e invoice, if you wants to generate then yes to proceed check errors and view and generate check details and generate it will be generated successfully.