SAP Knowledge Base Article - Public

2749330 - TREX-ERROR in Report or Data Source


You execute a report or a data source and you encounter TREX error messages, such as:

Error reading the data of datasource ABC (ABC stands for the ID of the data source)

Unexpected error occured

TREX error occurred

TREX-ERROR (6944): AttributeEngine: overflow in numeric calculation/[Request Info: Object Name = "HANADB".".c002:1fs:jdx_xxxx", FM Name = TREX_DBS_SEARCH_CELL_TABLE]

No connection to search engine

TREX-ERROR (1699): Invalid XML document for XML-ABAP transformation (Exception Object: CX_XSLT_FORMAT_ERROR)/[Request Info: Object Name = "HANADB".".c097:1fs:jdx_fsp_fnd_qre_val_qon_val",
No connection to search engine


  • SAP Business ByDesign
  • SAP Cloud for Customer

Reproducing the Issue

  1. Go to the work center Business Analytics.
  2. Select the view Design Data Sources (if you are previewing a data source) or Design Reports (If you are running a report).
  3. Open the data source or report.
  4. Set the required variables and execute.

The above error is displayed.


The involved data source is handling too much data.


You will need to reduce the data volume that this report and data source are handling. The easiest way to do so is to set more variables in the selection. However, if the data source is a joined one, it may also be necessary to adjust the data source design to optimize the performance. Please request your implementation partner to assist you with this if required.

See Also

2366796 - Best Practices for Modelling Data Sources and Reports - Performance


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