What is line item?
The line item contains information relating to account number, amount, debit/credit, tax code, amount etc. SAP allows maximum of 999 line items in a single document. Besides the one entered by you during an document entry, the system may also create its own line item called ‘system generated line items’, like tax deductions etc.
Irrespective of the line items entered, it should be ensured that the amount under heading debit and credit should be equal otherwise, the system will not allow to save or post the document.