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"The placeholder '%4' to strFmt is not used in the format string." in D365

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Posted on by Guruprasanna

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Hi All,

I am assigning string to container as shown below.

Container infoMessage;

infoMessage += strFmt("Ledger dimension %1-%2 Total number of lines processed %3 with total calculated interest %4", header.DimensionValues[#one], header.DimensionValues[#two], line.RecId, header.TotalCalcInterestAmount);

I am adding all the messages to the container and after the execution I will display the info messages one by one. in the above line of code I am getting "The placeholder '%4' to strFmt is not used in the format string." BP warning can any one please suggest me how can i solve this?

Thanks in advance.

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Development / Customization / SDK

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André Arnaud de Cal... 301,037 Super User 2025 Season 2 on at

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Hi Guruprasanna,

I haven't seen this BP before. Have you tried to replace the hardcoded text with a label?

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Guruprasanna 1,089 on at

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Hi Andre,

Thanks for the reply, Yes i have created label and tried still same.

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Sukrut Parab 71,710 Moderator on at

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Never saw this BP rule. Is your infolog displays properly or infolog gives placeholder when you display ? Please check best practice settings under VS options if you have any extra rules set up.

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Guruprasanna 1,089 on at

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Hi Sukrut,

Thanks for the reply !

infolog display properly. but best practice setting under my model all the best practice rules are checked. can you please suggest me which all should marked as check or un-check and is their any procedure we follow to set up the best practice rules.

Thanks in advance

Guru

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nep on at

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Hi guruprasanna

You are not alone - I have the exact same issue.

The infolog shows the message perfectly, but BP keeps giving the message "The placeholder '%2' to StrFmt is not used in the format string." I use a label which uses both %1 and %2, but only %2 is "punished" by BP.

The BP Rule is [BPUnusedStrFmtArgument].

Seems pretty strange - I expect BP checker to be false on this for some reason.

Please let me know if you found a solution.

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André Arnaud de Cal... 301,037 Super User 2025 Season 2 on at

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Probably there is a bug in the best practice check. What exact platform update are you using?

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nep on at

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I am using Update10 (7.0.4641.35168).

BPSuppressions are my best friend right now :-)

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Fedir Kryvyi 1,026 on at

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It looks like an odd issue, but technically, you can replace strFmt with string concatenation to resolve this.

InfoMessage += strFmt("Ledger dimension %1-%2 ", header.DimensionValues[#one], header.DimensionValues[#two]) + strFmt("Total number of lines processed %1", line.RecId) + strFmt(" with total calculated interest %1", header.TotalCalcInterestAmount).

or you can put this string concatenation inside of another method to make cleaner like

InfoMessage += this.formatString(header.DimensionValues[#one], header.DimensionValues[#two], line.RecId, header.TotalCalcInterestAmount);

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Andrew Jones a1x 136 on at

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Not sure if it's helpful, but the BP check only seems to look at en-us label files, so if you have labels that don't exist in that language, then you will get various label-related BP errors, including the one mentioned above about strFmt.

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Florian Hopfner 2,461 on at

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Medhi Moalla over in BP Label Error AX 7 posted instructions how you can use the labelc.exe tool to force a regeneration of the label resources .dll. This solved the BP warning BPUnusedStrFmtArgument for me.

Here are his instructions:

Open command line with (admin) privilege

Execute this command :
J:\AosService\PackagesLocalDirectory\bin\labelc.exe -metadata="J:\AosService\PackagesLocalDirectory" -output="J:\AosService\PackagesLocalDirectory\<Package Name>\Resources" -modelmodule="<Package Name>"

Another way to force the regeneration of the label resources .dll is to simply delete it. The next build will recreate them.

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