On the stock , i want change the negative value to positive .

[aryannitesh]

If stock with a negative valuation exists in the database, how can its value be converted to positive in ERPNext?

[volkswagner]

There are accounting implications you should consider.
Where did the stock come from to increase the qty?

Take a look at stock reconciliation.

[aryannitesh]

Stock Ledger shows negative for Avg Rate (Balance Stock) and Balance Value
Please find the attached image from that record onwards all values are negative,

Please help me to solve this issue.

[manal_erpnext]

i hope this help you
Stock Adjustment / COGS with Negative Stock