Diagnosis
The document is processing under company in Thailand and activated fortax invoice issued numbering. However, the tax invoice numbering isfailed because of missing number group for numbering.
The numbering group must be assigned to a combination of company code,business place, tax year, and document type. The numbering group itselfthen controls the official numbering for output tax.

System Response
Prossing terminated - no document posting.

Procedure
Check the customizing on output tax numbering with the combination ofcompany , business place, year and document type. The number range isapplied as month of tax invoice date.
IMG --> Cross Application component --> General Application Functions--> Cross-Application Document Numbering --> Thailand --> DefineNumbering Group for Tax Invoice (Output Tax)