Getting error while uploading excel file into offline tool...what to do?getting error in B2B and CDNR

While uploading data in the GST Offline Tool the Tool isn't accepting the Date format and HSN which are bifurcate in B2B and B2C.

One of my client (registered individual) dealing in supply of generator service. He get an oreder from a company which is in a same state. And Invoice value will be Rs 25k + gst. Should need to generate EWAY bill??? when generator back to my client need to generate eway gain ?????
please suggest appropriate way to deal
Regards
Vikas

RESPECTED SIR
CLIENTS HAVE TAXABLE SUPPLY BELOW 5CR B2C SUPPLIES. B2C SUPPLIES BELOW 5 CR IS IT OPTIONAL TO ENTER HSN CODE? IF YES I UNABLE TO FILE GSTR1 FOR MAY 2025 DUE TO SHOW ERROR IN CASE OF HSN CODE . HOW TO FILE PLEASE ADVICE.. THANKS

Dear sir/ madam
My question is.
Farmers brings raw cotton to our factory through Tata ace or any other goods vehicle , we purchase raw cotton and make urd purchase bill(self invoice) on their names and gives to them with payment , do we need to generate e way bill also at that time ??

Sir,.

We have prepared GST invoice in today but goods yet delivery to party. So can we make eway bill after two days example 10 June or its mendatory to create eway bill in invoice issue date

Please suggest

Dear sirs - Is it allowed ? That one of my clients maintaining two set of serial numbers FIVE DIGIT and TEN DIGITS from same premises with single GST registration number... Please advise... .. even if he wants to continue two serial numbers, what permission required from GST department... Regards

Please help with the GST rates for the following charges which needs to be paid to the bulider.
1. Electric connection/Water charges.
2. Club house charges.
3. Share money application charges.
4. Society formation charges.
5. Legal expenses.
6. Apex body charges.
7. Advance adhoc maintenanace charges.
8. Infrastructure/development charges.
9. Pipeline gas connection charges.

Our business is House Constructions. Shoud I pay tax under RCM for purchase of Sand, Stones, Gravel, Granite etc. eventhough purchased from GST suppliers? Recently I have been received a notice. Pls explain me anyone. Advance Thanks.

We are Transporter charging GST on forward charge basis to our customers, whether E invoicing is applicable to us ??