• 3931 Account in document type not set - Payable CR
• 3300 Account in document type not set - Supplier inventory account DR
• 3301 Account in document type not set - Transport DR
• 3302 Account in document type not set - Dependent costs DR
• 3303 Account in document type not set - Customs DR
• 3304 Account in document type not set - Deviation from fixed price DR
• 3305 Account in document type not set - Stock account
• 3306 Account in document type not set - Transfer to stock CR
• 3307 Account in document type not set - Imputed customs duty CR
• 3308 Account in document type not set - Imputed VAT CR
• 3309 Account in document type not set - Imputed dependent cost CR
• 3835 Account in document type not set - Imputed gross margin CR
• 3909 Account for tax type (XX) not set - Included VAT in retail CR
• 3291 Debit (XX) and credit (YY) are different!
• 3293 The item (XX) does not exist in the register!
• 3294 Account (XX) does not exist in the Chart of Accounts!
• 3295 Item type (XX) does not exist in the document type!
• 3836 Tax type (XX) does not exist in document type!
• 3296 The tax type (XX) does not exist in the register!
• 3932 Account in document type not set - VAT for tax type (XX)
• 3837 Rounding difference account is not set up!
• 3311 Rounding difference amount (XX) is too big!
• 3312 Cannot edit posts in a closed period!
• 3313 The maximum number of lines (30,000) on one journal entry has been exceeded!
• 3956 You are not authorized for this operation!
• 5861 The account "Payable CR" in the Payment methods is not defined
• 5942 The document for input/output has no payment method for installment payment defined!

as well as errors that occur validating posting lines in journal entry, according to the required validations of Chart of Accounts:

• 3333 Subject must be defined (XX)!
• 3334 Department must be defined (XX)!
• 3335 Cost center must be defined (XX)!
• 3342 Contra account must be defined (XX)!
• 3336 Document must be defined (XX)!
• 3341 Document date must be defined (XX)!
• 3340 Due date must be defined (XX)!
• 3337 Linked document must be defined (XX)!
• 3338 External document must be defined (XX)!
• 3339 Note must be defined (XX)!
• 3351 Debit amounts cannot be posted to this account (XX)!
• 3352 Credit amounts cannot be entered to this account (XX)!
• 3367 Account (XX) is for foreign currencies! Local currency cannot be entered!
• 3343 Cannot post to this account (XX)!
• 3349 Debit amounts must be posted to the account (XX)!
• 3350 Credit amounts must be posted to the account (XX)!

You can view errors list also by clicking the error report button (see Displaying Posting Error Messages).