Diagnosis
The CRM 3.x tax event determination is being used in CRM 4.0 andconsequently the TTE cannot derive the tax event from the key that isproduced from the input document parameters. The tax event determinesthe tax calculation procedures. If the tax event cannot be derived fromthe input document, tax calculation is not possible.
This is the key displayed in the short text.

System Response
The system produces this key string that is a concatenation of theparameters used to read the tax determination tables.
The following section explains this string in detail and gives youinformation about any parameter(s) that are wrong or missing on theinput document, or have not been correctly determined by the system:
Domestic or extra-community (non-EU) cases

• The end of a position is denoted by a colon :

Position in key,,Number of digits or characters,,Explanation
1,,Up to 5 characters or blank,,Community of own Partner
2,,2 characters or blank,,Country of own Partner
3,,2 digits or blank,,Direction Indicator for the transaction
4,,2 digits or blank,,Locational Relationship between recipient and ,,,,
supplier, for example Export Indicator
5,,3 characters,,Business Process
6,,3 digits or blank,,Product Taxability
7,,3 digits or blank,,Recipient Taxability

Example
:US:01:02:100:200:100
Interpretation
Position,, Value,,Explanation
1,,Blank,,No community
2,,US,,Country of own partner
3,,01,,Direction Indicator for transaction
4,,02,,Locational Relationship between recipient and ,,,,supplier
5,,100,,Business Process
6,,200,,Product Taxability
7,,100,,Recipient Taxability
EU intra-community cases


• The end of a position is denoted by a colon :

Position,,Number of characters or digits,,Explanation
1,,2 characters or blank,,Country
2,,2 digits or blank,,Direction Indicator for the transaction
3,,3 digits or blank,,Supplier Taxability
4,,3 digits or blank,,RecipientTaxability
5,,3 digits or blank,,Product Taxability
6,,3 characters,,Business Process
7,,1 digit,,Indicator*, if supplier is registered in own country
8,,1 digit,,Indicator*, if supplier is registered in recipient ,,,,
country
9,,1 digit,,Indicator*, if recipient is registered in supplier ,,,,
country
10,,1 digit,,Indicator*, if recipient is registered in own country
11,,1 digit,,Flag**, if EU simplification rules for triangulation ,,,,
apply
* ( 1 = is registered, 2 = is not registered with EU VAT registrationnumber)
* * ( blank = no simplification rules apply, 'X' = simplification rulesapply)

Example
DE:01:100:200:100:100:1:2:2:1: :
Interpretation
Position,,Value,,Explanation
1,,DE,,Country
2,,01,,Direction indicator for transaction
3,,100,,Supplier taxability
4,,200,,Recipient taxability
5,,100,,Product taxability
6,,100,,Business process
7,,1,,Indicator if supplier is registered in own country
8,,2,,Indicator if supplier is registered in recipient country
9,,2,,Indicator if recipient is registered in supplier country
10,,1,,Indicator if recipient is registered in own country
11,,Blank,,No EU simplification rules apply

Procedure
Check the parameters on the input document and compare them to thisstring.
Check, for example, that Partner and Product Taxability,Business Processes and so on that appear in the key stringcorrespond to the input document entries.
Check that the derived parameters such as Direction Indicator,Locational Relationship and the registration informationindicators have the values that you would expect from the partnerlocations and partner tax numbers that you provided on the InputDocument.
If all the above seems consistent, contact your System Adminstrator.
Check the Customizing Settings in:
Define Tax Event Determination
Define Tax Determination EU