Same document number in Batch Number Transactions Report

Dear all experts,

i faced a serious problem for the batch management

i don't know why there is many cases that have the duplicated Document number in the Batch Number Transactions Report

for example the document number will appear twice as ST 5650

i have checked the type ST means for Inventory Update

i tired to simulate to create the same case, but unsuccessful, no duplicated document number is generated, i tried it via the "Initial Quantities, Inventory Tracking, and Stock Posting", i can generate ST type JE document, but cannot generate duplicated Document number in the Batch Number Transactions Report

Please kindly help....

Many thanks!!!