fix: sales return issue

[rohitwaghchaure]

Steps to replicate issue

• Create Internal Transfer Delivery Note
• Create Purchase Receipt against the above Internal Transfer Delivery Note
• Now without creating purchase return entry, try to make Sales Return against the delivery note (created at step 1)
• System will allow to make Sales Return against the delivery note
• Ideally system should not allow to make sales return entry and should throw validation.

After Fix
Added validation

[stale]

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