You want to maintain an exclusion for a custom procedure at Maintain Condition Exclusion for Pricing Procedures configuration step.
When enter the Sequential Number 1, the system issues an error:
Invalid namespace for Sequential Number.
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SAP S/4HANA Cloud.
Reproducing the Issue
The sequential number is numeric type with length 3.
When you enter 1, for example, it is interpreted as 001; and 0 is considering a namespace restricted for SAP.
You can enter for sequential number the following numbers: 100...199, 200...299, 300...399 or 400...499.
102136, /FTI/WEBGUI_MSG031, sequential number, procedure, procedures, exclusion, invalid namespace, , KBA , SD-CAS-BD , Basic Data , SV-CLD-FRM-APP , Flexorg, CCF, Foreign Key Check , How To