I am facing an issue while running the Make-to-Order (MTO) production process in Microsoft Dynamics 365 Business Central.
Issue:When I create a Firm Planned Production Order and perform planning from the Order Planning (5522, Worksheet) page using the Calculate Plan action, I receive a rounding precision-related error (If requesting support, please provide the following details to help troubleshooting:
Error message:
The value 0.05953 in field Quantity is of lower precision than expected.
Note: Default rounding precision of 0.00001 is used if a rounding precision is not defined.
Internal session ID:
ae2d80f0-5f18-4615-bc4d-a77fd768b9b9
Application Insights session ID:
a71bf3f2-b51b-4e08-8878-05227cc9ba14
Client activity id:
9bf759aa-3b54-4474-81ec-31d025c6d6ab
Time stamp on error:
2026-04-12T18:37:02.4744742Z
User telemetry id:
71ba5bfe-3485-4007-9b49-687278b68f72
AL call stack:
"Unit of Measure Management"(CodeUnit 5402).RoundAndValidateQty line 4 - Base Application by Microsoft version 27.5.46862.47988
"Requisition Line"(Table 246)."Quantity - OnValidate"(Trigger) line 2 - Base Application by Microsoft version 27.5.46862.47988
"Requisition Line"(Table 246).SetSupplyQty line 13 - Base Application by Microsoft version 27.5.46862.47988
"Order Planning Mgt."(CodeUnit 5522).InsertDemandLines line 24 - Base Application by Microsoft version 27.5.46862.47988
"Order Planning Mgt."(CodeUnit 5522).TransformUnplannedDemandToRequisitionLines line 23 - Base Application by Microsoft version 27.5.46862.47988
"Order Planning Mgt."(CodeUnit 5522).GetOrdersToPlan line 4 - Base Application by Microsoft version 27.5.46862.47988
"Order Planning"(Page 5522).CalcPlan line 10 - Base Application by Microsoft version 27.5.46862.47988
"Order Planning"(Page 5522)."CalculatePlan - OnAction"(Trigger) line 2 - Base Application by Microsoft version 27.5.46862.47988
"Released Production Order"(Page 99000831)."Planning - OnAction"(Trigger) line 5 - Base Application by Microsoft version 27.5.46862.47988
). Because of this, the planning process fails and I am unable to proceed further.
What I have already checked:
- Verified that the Production BOM and Routing are correctly defined
- Checked that the Item has proper Base Unit of Measure and alternate Units of Measure
- Reviewed Quantity fields in Production Order and related documents
- Confirmed that no manual incorrect decimal values are entered
- Checked Item Tracking and Lot Size (if applicable)
- Verified Manufacturing Setup and Planning parameters
Despite these checks, the issue still persists during planning.
Questions:Are there any specific settings related to rounding precision that could cause this error during Order Planning?
How is rounding precision configured in Business Central (e.g., in Units of Measure, Item Card, or General Ledger Setup)?
What is the correct way to define rounding precision for quantities in manufacturing scenarios like Make-to-Order?
Could this issue be related to Unit of Measure conversion factors or Quantity Rounding Precision setup?
Is there any recommended standard practice to avoid such rounding issues during planning?
It would be really helpful if someone could also explain the concept of rounding precision in Business Central and how it impacts production planning and quantity calculations.
Thanks in advance for your help!
