To fix the RTE 6 error when reading information in Data C/F, follow these steps:
Step 1 : Make sure that in the Company Purchase Indent/Quotation/Order/Challan Configuration is enabled or not.
Step 2 : if enabled then Ensure that there are no huge pending records is avaiable in any masters. If there are, clear them.
Step 3 : Check Bill by Bill Receivable and Payable reports, any huge number of pending references in specific masters. If you find any, clear them.
Step 4 : Similarly, review any large number of pending Item Receivable/Payable records and clear them.
Once you've made sure there are no huge pending references in any master, you can proceed with C/F data.
Following these steps should help resolve the RTE 6 error.