Message type: E = Error
Message class:  FI_LU - Message class for Luxembourg VAT Reporting 
Message number: 052
Message text: Tax groups & and & have different values
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The SAP error message FI_LU052 indicates that there is a discrepancy between the tax groups assigned to different line items in a financial document. This typically occurs when you are trying to post a document that contains multiple line items with different tax codes or tax groups, which is not allowed in certain scenarios.
Cause: Different Tax Groups: The error arises when line items in a document have different tax groups assigned, and the system expects them to be uniform.
Configuration Issues: There may be configuration settings in the tax determination process that are not aligned, leading to inconsistencies. Document Type Restrictions: Certain document types may have restrictions on mixing tax groups.
Solution: Review Line Items: Check the line items in the document to ensure that they all have the same tax group. If they do not, you will need to adjust them to be consistent. Adjust Tax Codes: If the line items need to have different
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